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EP1307625A1 - Lock-key system - Google Patents
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EP1307625A1 - Lock-key system - Google Patents

Lock-key system

Info

Publication number
EP1307625A1
EP1307625A1 EP01962613A EP01962613A EP1307625A1 EP 1307625 A1 EP1307625 A1 EP 1307625A1 EP 01962613 A EP01962613 A EP 01962613A EP 01962613 A EP01962613 A EP 01962613A EP 1307625 A1 EP1307625 A1 EP 1307625A1
Authority
EP
European Patent Office
Prior art keywords
key
flank
rib
groove
vertical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01962613A
Other languages
German (de)
French (fr)
Other versions
EP1307625B1 (en
Inventor
Jürgen Krühn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Assa Abloy Sicherheitstechnik GmbH
Original Assignee
Ikon AG Prazisionstechnik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ikon AG Prazisionstechnik filed Critical Ikon AG Prazisionstechnik
Priority to SI200130797T priority Critical patent/SI1307625T1/en
Publication of EP1307625A1 publication Critical patent/EP1307625A1/en
Application granted granted Critical
Publication of EP1307625B1 publication Critical patent/EP1307625B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0029—Key profiles characterized by varying cross-sections of different keys within a lock system
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0041—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
    • E05B19/0052—Rectangular flat keys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7842—Single shank or stem
    • Y10T70/7859—Flat rigid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7881—Bitting

Definitions

  • the invention relates to a lock and key system, with a flat key that can be inserted into the key channel of a cylinder core, with corresponding ribs and grooves on the two flat sides of the key corresponding grooves and ribs in the key channel, the key from the key back to the key face is divided into different profile sections, of which the section near the key back is designed as a guide section and the section near the key chest at least partially receives the notches for the associated tumblers.
  • the pin tumblers are brought into the open position using a suitable tool.
  • the tumblers are sequentially clamped in the open position and held until all tumblers are open.
  • Claim 1 in that in the central profile section at least one groove on one outside of the key channel is assigned a rib on the opposite outside of the key channel, that both the groove and the rib on the one hand are perpendicular or almost perpendicular to
  • flank running along the central plane of the key or key channel and, on the other hand, have a flank running obliquely to this central plane and that the vertical or almost vertical flank of the groove faces the opposite oblique flank of the rib and the vertical or almost vertical flank of the rib faces the opposite oblique flank of the groove is.
  • the key channel is divided into different sections that are offset from one another and paracentric with respect to the center line.
  • This subdivision is known and is usually used to subdivide key profiles in order to separate the area for variation in locking systems and a non-variable area.
  • Profile channels designed in this way may allow a cylinder to be opened using a special picking tool and unfavorable tumbler combinations and great skill.
  • the Design of key channels according to the invention is now characterized by a special assignment of the flanks of the ribs and grooves in the central profile section.
  • the flat key is designated 1 and the corresponding key channel with 2.
  • the surrounding cylinder core is indicated by 3.
  • the section close to the key back 6 is designed as a guide section 8, while the section close to the key chest 7 has the notches (not shown here) for the interaction with the tumblers.
  • grooves 4 and ribs 5 are provided in the key channel in the central profile section 9 of the key channel, which of course then also includes corresponding ribs 5a and grooves 4a on the side surfaces of the flat key.
  • the profile section is delimited by vertical flanks 4 'on the grooves 4 or 5' on the ribs 5 and in the other direction by oblique flanks 4 "or 5".
  • the tool when pecking, the tool can move preferentially in one direction and may be deflected into the next profile section, but the movement is stopped in the other direction (barb effect).
  • FIG. 3 and 4 - Another embodiment - as shown in Figures 3 and 4 - includes an additional taper of the profile sections such that the P. tool is wedged in one direction with the appropriate dimensions. As a result, the picking tool has less (or no) freedom of movement therein and the picking is stopped.

Landscapes

  • Lock And Its Accessories (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Adornments (AREA)

Abstract

The invention relates to a lock-key system comprising a flat key (1), which is insertable into the keyway of a cylinder core (3), wherein grooves (4) and ribs (5) inside the keyway are assigned to corresponding ribs (5a) and grooves (4a) located on both flat sides of the key (1), wherein the key is subdivided from the key spine (6) to the key facing into different profile sections. The middle profile section is assigned to at least one groove (4) on one outer surface of the keyway (2) and to a rib (5) on the opposite outer surface of the keyway. Both the groove (4) as well as the rib (5) comprise a flank (4', 5'), which extends perpendicular or substantially perpendicular to the center plane of the key or of the keyway, and comprise a flank (4'', 5''), which extends slantingly to this center plane. The perpendicular or substantially perpendicular flank of the groove faces the opposite slanted flank of the rib, and the perpendicular or substantially perpendicular flank of the rib faces the opposite slanted flank of the groove.

Description

Schloss-Schlüssel-SystemLock and key system
Die Erfindung betrifft ein Schloss-Schlüssel-System, mit einem Flachschlüssel, der in den Schlüsselkanal eines Zylinderkernes einführbar ist, wobei den Rippen und Nuten an den beiden Flachseiten des Schlüssels entsprechende Nuten und Rippen im Schlüsselkanal zugeordnet sind, wobei der Schlüssel vom Schlüsselrücken zur Schlüsselbrust in verschiedene Profilabschnitte aufgeteilt ist, wovon der dem Schlüsselrücken nahe Abschnitt als Führungsabschnitt ausgebildet ist und der der Schlüsselbrust nahe Abschnitt zumindest teilweise die Kerben für die zugeordneten Zuhaltungen aufnimmt.The invention relates to a lock and key system, with a flat key that can be inserted into the key channel of a cylinder core, with corresponding ribs and grooves on the two flat sides of the key corresponding grooves and ribs in the key channel, the key from the key back to the key face is divided into different profile sections, of which the section near the key back is designed as a guide section and the section near the key chest at least partially receives the notches for the associated tumblers.
Derartige Flachschlüssel bzw. Schlüsselkanal Ausbildungen sind in vielfältiger Weise bekannt. Beispiele hierfür sind die EP 0 261 298 A2 oder die DE 4304 604 C2.Such flat keys or key channel designs are known in many ways. Examples of this are EP 0 261 298 A2 or DE 4304 604 C2.
Konventionelle Schließzylinder mit Flachschlüssel und Stiftzuhaltungen werden u.a. durch "Picken" mit manuellem Pickingwerkzeug, Pickingpistole oder sog. Elektropick "angegriffen".Conventional locking cylinders with flat keys and pin tumblers are among others "attacked" by "picking" with a manual picking tool, picking gun or so-called electropick.
Beim Pickvorgang werden die Stiftzuhaltungen mit dem geeignetem Werkzeug in Öffnungsposition gebracht. Durch Verspannen des Zylinderkernes in Drehrichtung werden die Zuhaltungen nacheinander in Öffnungsposition verspannt und gehalten bis alle Zuhaltungen offen sind. Dies geschieht beim manuellen Picken quasi statisch oder dynamisch beim Picken mit der mechanischen Pickingpistole oder dem Elektropick.During the picking process, the pin tumblers are brought into the open position using a suitable tool. By clamping the cylinder core in the direction of rotation, the tumblers are sequentially clamped in the open position and held until all tumblers are open. With manual picking, this happens virtually statically or dynamically when picking with the mechanical picking gun or the electropick.
Gegen das unbefugte Öffnen von Schließzylindern mit Pickingwerkzeug wurden verschiedene Maßnahmen vorgeschlagen und -meist in Kombination - miteinander angewendet. Zu diesen Maßnahmen gehören ...Various measures have been proposed against the unauthorized opening of locking cylinders with a picking tool and - mostly in combination - applied with one another. These measures include ...
+ Besonders ausgebildete Zuhaltungsstifte, die sich beim"Picken mit Nuten oder Vorsprüngen an der Trennlinie zwischen Zylindergehäuse und -kern verhaken und ein "Öffnen" mittels Picken verhindern.+ Specially designed tumbler pins which, when "picking with grooves or projections, get caught on the dividing line between the cylinder housing and core and prevent" opening "by means of picking.
+ Besonders ausgebildete Bohrungen in Zylinderkern und/ oder Zyliπdergehäuse, die beim "Picken" dazu führen, dass sich die Zuhaltungsstifte darin verhaken und dadurch, dass sie nicht widersandslos an die Trennlinie zwischen Gehäuse und Kern gelangen, ein'Offnen" mittels Picken verhindern.+ Specially designed bores in the cylinder core and / or cylinder housing, which, when "pecking", cause the tumbler pins to get caught in it and thereby that do not get to the dividing line between housing and core without opposition, prevent 'opening' by pecking.
+ Parazentrische Schlüsselprofile, die das Hantieren mit Pickingwerkzeugen behindern+ Paracentric key profiles that hinder handling with picking tools
Alle beschriebenen Maßnahmen erschweren das Picken generell, verhindern dies jedoch nicht grundsätzlich.All of the measures described generally make pecking more difficult, but do not fundamentally prevent this.
Es ist daher die Aufgabe der Erfindung ein Schloss-Schlüssel-System zu schaffen, das durch Picken nach Möglichkeit nicht zu öffnen ist.It is therefore the object of the invention to provide a lock and key system which, if possible, cannot be opened by pecking.
Gelöst wird diese Aufgabe ausgehend von den Merkmalen des Oberbegriffs desThis problem is solved on the basis of the characteristics of the generic term of
Patentanspruchs 1 erfindungsgemäß dadurch, dass im mittleren Profilabschnitt wenigstens einer Nut an der einen Außenseite des Schlüsselkanals eine Rippe an der gegenüberliegenden Außenseite des Schlüsselkanals zugeordnet ist, dass sowohl die Nut wie auch die Rippe einerseits eine senkrecht oder nahezu senkrecht zurClaim 1 according to the invention in that in the central profile section at least one groove on one outside of the key channel is assigned a rib on the opposite outside of the key channel, that both the groove and the rib on the one hand are perpendicular or almost perpendicular to
Mittelebene des Schlüssels bzw. Schlüsselkanals verlaufende Flanke und andererseits eine schräg zu dieser Mittelebene verlaufende Flanke aufweisen und dass die senkrechte oder nahezu senkrechte Flanke der Nut der gegenüberliegenden schrägen Flanke der Rippe und die senkrechte oder nahezu senkrechte Flanke der Rippe der gegenüberliegenden schrägen Flanke der Nut zugewandt ist.The flank running along the central plane of the key or key channel and, on the other hand, have a flank running obliquely to this central plane and that the vertical or almost vertical flank of the groove faces the opposite oblique flank of the rib and the vertical or almost vertical flank of the rib faces the opposite oblique flank of the groove is.
Vorzugsweise Ausgestaltungen ergeben sich aus den Unteransprüchen.Refinements preferably result from the subclaims.
Der Schlüsselkanal ist in verschiedene Abschnitte unterteilt, die gegenüber der Mittellinie gegeneinander versetzt und parazentrisch sind.The key channel is divided into different sections that are offset from one another and paracentric with respect to the center line.
Diese Unterteilung ist bekannt und wird üblicherweise zur Unterteilung von Schlüsselprofilen genutzt, um den Bereich zur Variation in Schließanlagen und einen nicht variablen Bereich voneinander zu trennen.This subdivision is known and is usually used to subdivide key profiles in order to separate the area for variation in locking systems and a non-variable area.
Derartig gestaltete Profilkanäle gestatten es u.U. durch spezielles Pickingwerkzeug und ungünstige Zuhaltungskombinationen und großem Geschick einen Zylinder zu öffnen. Die Gestaltung von Schlüsselkanälen gemäß der Erfindung ist nun durch eine besondere Zuordnung der Flanken der Rippen und Nuten im mittleren Profilabschnitt gekennzeichnet.Profile channels designed in this way may allow a cylinder to be opened using a special picking tool and unfavorable tumbler combinations and great skill. The Design of key channels according to the invention is now characterized by a special assignment of the flanks of the ribs and grooves in the central profile section.
Die Erfindung soll nachfolgend an Ausführungsbeispielen erläutert werden, wobei die Zeichnungen einen Querschnitt durch den Schlüssel bzw. die entsprechende Querschnittskontur des Schlüsselkanals zeigen.The invention will be explained below using exemplary embodiments, the drawings showing a cross section through the key or the corresponding cross sectional contour of the key channel.
In den Zeichnungen ( Fig. 1-4) ist der Flachschlüssel mit 1 und der entsprechende Schlüsselkanal mit 2 bezeichnet. Der umgebende Zylinderkern ist mit 3 angedeutet. Der dem Schlüsselrücken 6 nahe Abschnitt ist als Führungsabschnitt 8 ausgebildet, während der der Schlüsselbrust 7 nahe Abschnitt die - hier nicht dargestellten - Kerben für das Zusammenspiel mit den Zuhaltungen aufweist.In the drawings (Fig. 1-4), the flat key is designated 1 and the corresponding key channel with 2. The surrounding cylinder core is indicated by 3. The section close to the key back 6 is designed as a guide section 8, while the section close to the key chest 7 has the notches (not shown here) for the interaction with the tumblers.
Im mittleren Profilabschnitt 9 des Schlüsselkanals sind im dargestellten Ausführungsbeispiel Nuten 4 und Rippen 5 im Schlüsselkanal vorgesehen, wozu dann selbstverständlich entsprechende Rippen 5a und Nuten 4a an den Seitenflächen des Flachschlüssels gehören. In einer Richtung ist der Profilabschnitt durch senkrechte Flanken 4' an den Nuten 4 bzw. 5' an den Rippen 5 und in der anderen Richtung durch schräge Flanken 4" bzw.5" begrenzt.In the illustrated exemplary embodiment, grooves 4 and ribs 5 are provided in the key channel in the central profile section 9 of the key channel, which of course then also includes corresponding ribs 5a and grooves 4a on the side surfaces of the flat key. In one direction the profile section is delimited by vertical flanks 4 'on the grooves 4 or 5' on the ribs 5 and in the other direction by oblique flanks 4 "or 5".
Bei der in Figur 2 dargestellten Ausführung sind die entsprechenden Flächen in umgekehrter Richtung angeordnet.In the embodiment shown in Figure 2, the corresponding surfaces are arranged in the opposite direction.
Hierdurch wird beim Picken erreicht, dass sich das Werkzeug in einer Richtung bevorzugt bewegen kann und unter Umständen in den nächsten Profilabschnitt umgelenkt wird, während in der anderen Richtung die Bewegung jedoch gestoppt wird (Widerhakeneffekt).As a result, when pecking, the tool can move preferentially in one direction and may be deflected into the next profile section, but the movement is stopped in the other direction (barb effect).
Eine weitere Ausführung - wie sie in den Figuren 3 und 4 dargestellt ist - beinhaltet eine zusätzliche Verjüngung der Profilabschnitte derart, dass das P.-Werkzeug bei entsprechender Abmessung in einer Richtung verkeilt wird. Dies hat zur Folge, dass das Pickingwerkzeug hierin weniger (oder keine) Bewegungsfreiheit besitzt und das Picken gestoppt wird. Another embodiment - as shown in Figures 3 and 4 - includes an additional taper of the profile sections such that the P. tool is wedged in one direction with the appropriate dimensions. As a result, the picking tool has less (or no) freedom of movement therein and the picking is stopped.

Claims

Patentansprüche claims
1. Schloss-Schlüssel-System, mit einem Flachschlüssel (1), der in den Schlüsselkanal (2) eines Zylinderkernes (3) einführbar ist, wobei den Rippen (5a) und Nuten (4a) an den beiden Flachseiten des Schlüssels entsprechende Nuten (4) und Rippen (5) im Schlüsselkanal (2) zugeordnet sind, wobei der Schlüssel vom Schlüsselrücken (6) zur Schlüsselbrust (7) in verschiedene Profilabschnitte aufgeteilt ist, wovon der dem Schlüsselrücken (6) nahe Abschnitt als Führungsabschnitt (8) ausgebildet ist und der der Schlüsselbrust (7) nahe Abschnitt zumindest teilweise die Kerben für die zugeordneten Zuhaltungen aufnimmt, dadurch gekennzeichnet, dass im mittleren Profilabschnitt (9) wenigstens einer Nut (4) an der einen Außenseite des Schlüsselkanals (2) eine Rippe (5) an der gegenüberliegenden Außenseite des Schlüsselkanals zugeordnet ist, dass sowohl die Nut (4) wie auch die Rippe (5) einerseits eine senkrecht oder nahezu senkrecht zur Mittelebene des Schlüssels bzw. Schlüsselkanals verlaufende Flanke (4'; 5') und andererseits eine schräg zu dieser Mittelebene verlaufende Flanke (4"; 5") aufweisen und dass die senkrechte oder nahezu senkrechte Flanke (4') der Nut (4) der gegenüberliegenden schrägen Flanke (5") der Rippe (5) und die senkrechte oder nahezu senkrechte Flanke (5') der Rippe (5) der gegenüberliegenden schrägen Flanke (4") der Nut (4) zugewandt ist.1. Lock-key system, with a flat key (1) that can be inserted into the key channel (2) of a cylinder core (3), the grooves (4a) and grooves (4a) on the two flat sides of the key corresponding grooves ( 4) and ribs (5) in the key channel (2) are assigned, the key from the key back (6) to the key face (7) being divided into different profile sections, of which the section close to the key back (6) is designed as a guide section (8) and the section near the key chest (7) at least partially receives the notches for the associated tumblers, characterized in that in the central profile section (9) at least one groove (4) on one outside of the key channel (2) has a rib (5) is assigned to the opposite outside of the key channel that both the groove (4) and the rib (5) on the one hand are perpendicular or almost perpendicular to the central plane of the key or key box n as a flank (4 '; 5 ') and on the other hand have a flank (4 "; 5") which runs obliquely to this central plane and that the vertical or almost vertical flank (4') of the groove (4) of the opposite oblique flank (5 ") of the rib (5) and the vertical or almost vertical flank (5 ') of the rib (5) faces the opposite oblique flank (4 ") of the groove (4).
2. Schloss-Schlüssel-System nach Anspruch 1, dadurch gekennzeichnet, dass das Schlüsselprofil parazentrisch ausgebildet ist.2. Lock and key system according to claim 1, characterized in that the key profile is paracentric.
3. Schloss-Schlüssel-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Schiüsselkanal (2) sich in Richtung der schrägen Flanken (4" bzw. 5") verjüngend ausgebildet ist.3. Lock and key system according to one of the preceding claims, characterized in that the key channel (2) tapers in the direction of the oblique flanks (4 "or 5").
4. Schloss-Schlüssel-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der mittlere Profilabschnitt (9) in mehrere Profilabschnitte unterteilt ist und alle diese Profilabschnitte in einer Richtung - von der Schlüsselbrust zum Schlüsselrücken gesehen - durch schräge Flanken und vom Schlüsselrücken zur Schlüsselbrust gesehen durch senkrechte oder nahezu senkrechte Flanken begrenzt sind. 4. lock and key system according to one of the preceding claims, characterized in that the central profile section (9) is divided into several profile sections and all these profile sections are limited in one direction - from the key face to the key back - by oblique flanks and from the key back to the key face by vertical or almost vertical flanks.
EP01962613A 2000-08-08 2001-08-07 Lock-key system Expired - Lifetime EP1307625B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130797T SI1307625T1 (en) 2000-08-08 2001-08-07 Lock-key system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10042070A DE10042070C2 (en) 2000-08-08 2000-08-08 Lock and key system
DE10042070 2000-08-08
PCT/DE2001/002999 WO2002012659A1 (en) 2000-08-08 2001-08-07 Lock-key system

Publications (2)

Publication Number Publication Date
EP1307625A1 true EP1307625A1 (en) 2003-05-07
EP1307625B1 EP1307625B1 (en) 2007-12-19

Family

ID=7653954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01962613A Expired - Lifetime EP1307625B1 (en) 2000-08-08 2001-08-07 Lock-key system

Country Status (9)

Country Link
US (1) US6851292B2 (en)
EP (1) EP1307625B1 (en)
AT (1) ATE381654T1 (en)
AU (1) AU2001283793A1 (en)
DE (2) DE10042070C2 (en)
ES (1) ES2295195T3 (en)
HR (1) HRP20030066B1 (en)
PT (1) PT1307625E (en)
WO (1) WO2002012659A1 (en)

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AU2001283793A1 (en) 2002-02-18
DE10042070A1 (en) 2002-02-28
HRP20030066B1 (en) 2008-11-30
HRP20030066A2 (en) 2004-06-30
PT1307625E (en) 2008-02-01
US20030164012A1 (en) 2003-09-04
ES2295195T3 (en) 2008-04-16
ATE381654T1 (en) 2008-01-15
DE50113404D1 (en) 2008-01-31
EP1307625B1 (en) 2007-12-19
WO2002012659A1 (en) 2002-02-14
US6851292B2 (en) 2005-02-08
DE10042070C2 (en) 2002-09-26

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