JPH0720479B2 - Retaining plate for artificial teeth - Google Patents
Retaining plate for artificial teethInfo
- Publication number
- JPH0720479B2 JPH0720479B2 JP62249384A JP24938487A JPH0720479B2 JP H0720479 B2 JPH0720479 B2 JP H0720479B2 JP 62249384 A JP62249384 A JP 62249384A JP 24938487 A JP24938487 A JP 24938487A JP H0720479 B2 JPH0720479 B2 JP H0720479B2
- Authority
- JP
- Japan
- Prior art keywords
- holding plate
- artificial tooth
- plate body
- teeth
- artificial
- 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.)
- Expired - Lifetime
Links
- 210000000214 mouth Anatomy 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 17
- 238000005219 brazing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 210000004513 dentition Anatomy 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 235000019646 color tone Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/10—Supports for artificial teeth for transport or for comparison of the colour
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は総義歯を作成するに際し、前歯用の６本の人工
歯を患者の口腔内に当てがってその人工歯が審美的に良
好なものであるか否かを判断する“試適”に好適な人工
歯用保持板に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] In the production of a complete denture, the present invention applies six artificial teeth for anterior teeth to the oral cavity of a patient, and the artificial teeth are aesthetically favorable. The present invention relates to an artificial tooth holding plate suitable for "trial fitting" for determining whether or not it is a proper one.
通常人工歯は蝋板と俗称されている平板より成る保持板
本体に天然歯と同様の順序で接着用蝋材で仮止めされた
状態で市販されている。Generally, artificial teeth are marketed in the state of being temporarily fixed to a holding plate body made of a flat plate commonly called a wax plate in the same order as natural teeth with an adhesive wax material.
しかしながら人工歯の中でも特に前歯は種々の形態・大
きさ・色調が存在するため術者は種々の市販人工歯の中
から個々の患者に最も適した人工歯を患者の顔貎等を考
慮して選択しなければならないが、この選択に当たりそ
の人工歯が適切なものであるかどうかを判定する最も確
実な方法は、その人工歯を直接患者の口腔内に当てがっ
て判断する“試適”であり、この“試適”は患者にとっ
ても実際の感じがその場で判るので義歯作成に当たって
採用する人工歯が審美的に良好であることを患者に納得
させ易い好ましい方法である。However, among artificial teeth, anterior teeth in particular have various shapes, sizes, and color tones, so the operator considers the facial teeth of the patient to find the most suitable artificial tooth for each patient from various commercially available artificial teeth. The choice must be made, but the most reliable method for determining whether the artificial tooth is appropriate for this selection is the “trial” in which the artificial tooth is directly applied to the oral cavity of the patient. This "trial" is a preferable method because it is easy for the patient to easily convince the patient that the artificial tooth used for making the denture is aesthetically good because the actual feeling can be seen on the spot by the patient.
しかるに、従来の人工歯は一応天然歯の配列順序で保持
板本体に仮止めされてはいるが、 人工歯を口腔内に試適しようとすると、保持板本体
が大きいために口腔内に挿入することができない 保持板本体は人工歯が平板状の保持板本体の平面上
に単に並んでいるだけであるので、特に前歯では実際の
口腔内でのアーチ状の並び方と大きくかけ離れており、
実際の義歯の配列のイメージを掴みにくい という問題点があった。However, conventional artificial teeth are temporarily fixed to the holding plate body in the order of arrangement of natural teeth, but when trying to trial-fit the artificial tooth into the oral cavity, the artificial tooth should be inserted into the oral cavity because it is large. In the holding plate body, the artificial teeth are simply lined up on the plane of the flat plate-shaped holding plate body, so especially in the front teeth, it is far from the actual arched arrangement in the oral cavity,
There was a problem that it was difficult to grasp the image of the actual arrangement of dentures.
このような問題点を解決するためには、平板状の保持板
本体の平面上に仮止めされている人工歯を保持板本体か
ら総べて取り外し、予め用意しておいた患者の口腔内の
湾曲に類似したアーチ状の板にユーテリテイワツクス等
の仮止め用接着材を用いて再度配列し直して口腔内に試
適する方法も考えられるが、この方法は患者の口腔内の
湾曲に類似したアーチ状の板を別途準備する必要がある
と共に、購入した人工歯を保持板本体から取り外す作業
と、使用後に再び元の保持板本体上に戻す作業とが必要
で、煩わしく且つ時間を要するという問題点があった。In order to solve such a problem, all the artificial teeth temporarily fixed on the plane of the flat plate-shaped holding plate body are removed from the holding plate body, and the prepared oral cavity of the patient is prepared. It is possible to use a temporary fixing adhesive such as utility wax to re-arrange it on an arched plate that resembles the curve and try it in the oral cavity, but this method is similar to the curve in the patient's oral cavity. It is necessary to separately prepare the arched plate, and it is necessary to remove the purchased artificial tooth from the holding plate body and to return it to the original holding plate body after use, which is cumbersome and time-consuming. There was a problem.
本発明者らは上記の問題点を解決すべく鋭意検討の結
果、人工歯を保持板本体から取り外すことなく患者の口
腔内に直接挿入して試適を実施できるようにすれば良
く、そのためには保持板本体の人工歯が仮止めされる前
面を患者の口腔内の湾曲に類似した曲面に予め成型して
おいて、この曲面部分の前面に前歯６歯の人工歯を天然
歯と同じ配列順序で蝋材で仮止めしておき、各人工歯の
歯頚部が該保持板本体の端縁と5mm以下の距離に配設し
ておくと共に、保持板本体の蝋材により仮止めされてい
る人工歯の切端部側又は保持板本体の裏面に保持板本体
を支持する支持部材との係合部を設けておき、口腔内に
挿入可能な横幅にして使用できる形状としておけば良い
ことを究明して本発明を完成したのである。As a result of earnest studies to solve the above problems, the present inventors may directly insert the artificial tooth into the oral cavity of the patient without removing it from the holding plate main body so that the trial application can be performed. The front surface of the holding plate main body to which the artificial teeth are temporarily fixed is pre-molded into a curved surface similar to the curvature in the patient's mouth, and the six front teeth artificial teeth are arranged on the front surface of the curved surface in the same arrangement order as the natural teeth. , And the tooth neck of each artificial tooth is placed at a distance of 5 mm or less from the edge of the holding plate body, and artificially fixed by the wax material of the holding plate body. It has been clarified that an engaging portion with a supporting member for supporting the holding plate main body is provided on the incisal end side of the tooth or on the back surface of the holding plate main body so that the width can be inserted into the oral cavity and the shape can be used. Thus, the present invention has been completed.
すなわち、本発明は前面が16mm〜55mmの曲率半径で湾曲
した曲面を有している保持板本体の前面に前歯６歯の人
工歯が天然歯と同じ配列順序で蝋材で仮止めされてい
て、各人工歯の歯頚部が該保持板本体の端縁とそれぞれ
5mm以下の距離に配設されており、保持板本体の蝋材に
より仮止めされている人工歯の切端部側又は保持板本体
の裏面に該保持板本体を支持する支持部材との係合部が
設けられていて、口腔内に挿入可能な横幅にして使用で
きることを特徴とする人工歯用保持板に関するものであ
る。That is, according to the present invention, the artificial teeth having six front teeth are temporarily fixed to the front surface of the holding plate body having a curved surface with a radius of curvature of 16 mm to 55 mm by a wax material in the same arrangement order as the natural teeth. , The tooth neck of each artificial tooth and the edge of the holding plate body respectively
An engaging portion with a support member that supports the holding plate main body, which is arranged at a distance of 5 mm or less and is temporarily fixed by the wax material of the holding plate main body on the cut end side of the artificial tooth or the back surface of the holding plate main body. The present invention relates to a holding plate for an artificial tooth, which is provided with, and can be used with a lateral width that can be inserted into the oral cavity.
以下、本発明に係るに人工歯用保持板について図面によ
り詳細に説明する。Hereinafter, the artificial tooth holding plate according to the present invention will be described in detail with reference to the drawings.
第１図は本発明に係る上顎用人工歯保持板の１実施例の
正面図、第２図は同底面図、第３図は第１図におけるＡ
−Ａ線拡大断面図、第４図は本発明に係る上顎用人工歯
保持板の他の実施例の正面図、第５図は第４図における
Ｂ−Ｂ線断面図である。FIG. 1 is a front view of an embodiment of the artificial tooth holding plate for the upper jaw according to the present invention, FIG. 2 is a bottom view of the same, and FIG. 3 is A in FIG.
-A line enlarged sectional view, FIG. 4 is a front view of another embodiment of the upper jaw artificial tooth holding plate according to the present invention, and FIG. 5 is a BB line sectional view in FIG.
図面中、１はその前面に16mm〜55mmの曲率半径で湾曲し
た曲面を有している保持板本体であり、合成樹脂や金属
や木材や厚紙などのその形状が容易に変化しない素材で
構成されている。この保持板本体１がその前面に16mm〜
55mmの曲率半径で湾曲した曲面を有していなければなら
ないのは、天然歯列の曲率半径が統計的に上顎で16mm〜
33mm,下顎で16mm〜55mmであるからであり、平均値は上
顎で20mm,下顎で22mmと言われているから曲面の曲率半
径はこの平均値に近似した曲率半径であることが好まし
い。またこの曲面の前面には前歯６歯から成る人工歯３
が天然歯と同じ配列順序で蝋材２で仮止めされるので、
蝋材２の装着用凹部1aが設けられていることが好まし
い。この本発明に係る人工歯保持板は口腔内に挿入して
試適に使用されるものであるから、各人工歯３の歯頚部
3aが保持板本体１の歯頚部3a側の端縁1bとそれぞれ5mm
以下の距離に配設されていることが、口腔内に挿入でき
て且つ挿入された際に各人工歯３の歯頚部3aを患者の歯
槽頂と一致する位置に位置せしめ得るために必要であ
る。また蝋材２で仮止めされる各人工歯３の切端部3b側
の保持板本体１は、各人工歯３の歯頚部3a側と同様にそ
の端縁と各人工歯３の切端部3bとの間の距離が非常に短
くても差し支えないが、患者の口腔内へ本発明に係る人
工歯保持板を挿入して試適に供する際に支障にならない
幅と厚さであればその端縁と各人工歯３の切端部3bとの
間の距離が非常に長くても差し支えなく、このように長
い部分を設ける場合には蝋材２で仮止めされる各人工歯
３の種類等を記載できる幅を有する平面を第１図に示し
た実施例のように備えたものとしておくことが好まし
い。この蝋材２で仮止めされる各人工歯３の切端部3b側
の保持板本体１が、各人工歯３の歯頚部3a側と同様にそ
の端縁と各人工歯３の切端部3bとの間の距離が非常に又
は比較的短い場合には患者の口腔内へ本発明に係る人工
歯保持板を挿入し難いため、各人工歯３の切端部3b側の
保持板本体１に保持板本体１を支持する支持部材（図示
なし）との係合部1cを設けるか又は保持板本体１の裏面
に保持板本体１を支持する支持部材（図示なし）との係
合部1cを設けておく。この係合部1cは第１図に示した実
施例では支持部材に設けられた孔に嵌入される突起であ
り、第４図に示した実施例では支持部材に設けられた突
起に嵌合される孔である。なお、保持板本体１の横幅は
最初から口腔内に挿入可能な横幅であっても良いが、保
持板本体１の蝋材２で仮止めされている人工歯３の両側
に保持板本体１を平面に安定して載置させるための載置
板1dが曲面部分から折曲やナイフ等による切断により離
脱容易に設けられていても差し支えない。In the drawing, 1 is a holding plate body having a curved surface with a radius of curvature of 16 mm to 55 mm on its front surface, which is made of a material such as synthetic resin, metal, wood or cardboard whose shape does not easily change. ing. This holding plate body 1 has 16 mm
It must have a curved surface with a radius of curvature of 55 mm because the radius of curvature of the natural dentition is statistically 16 mm for the upper jaw.
This is because it is 33 mm and 16 mm to 55 mm in the lower jaw, and the average value is said to be 20 mm in the upper jaw and 22 mm in the lower jaw. Therefore, it is preferable that the radius of curvature of the curved surface be a radius of curvature approximate to this average value. Also, on the front surface of this curved surface, an artificial tooth 3 consisting of 6 front teeth
Is temporarily fixed with wax 2 in the same arrangement order as natural teeth,
It is preferable that a concave portion 1a for mounting the wax material 2 is provided. Since the artificial tooth holding plate according to the present invention is inserted into the oral cavity and used in a trial manner, the tooth neck of each artificial tooth 3
3a is 5 mm each with the edge 1b of the holding plate body 1 on the tooth neck 3a side
It is necessary to be arranged at the following distance so that it can be inserted into the oral cavity and when it is inserted, the tooth neck 3a of each artificial tooth 3 can be positioned at a position corresponding to the alveolar crest of the patient. . Further, the holding plate body 1 on the side of the cut end 3b of each artificial tooth 3 which is temporarily fixed with the wax material 2 has its edge and the cut end 3b of each artificial tooth 3 similarly to the tooth neck 3a side of each artificial tooth 3. Although the distance between the two may be very short, if the width and thickness that do not hinder the provision of the artificial tooth holding plate according to the present invention in the oral cavity of the patient and the edge thereof are sufficient. It does not matter even if the distance between the cut end portion 3b of each artificial tooth 3 is very long, and when providing such a long portion, the type of each artificial tooth 3 temporarily fixed with the wax material 2 can be described. It is preferable to have a plane having a width as in the embodiment shown in FIG. The holding plate body 1 on the cut end 3b side of each artificial tooth 3 temporarily fixed by the wax material 2 has its edge and the cut end 3b of each artificial tooth 3 similarly to the tooth neck 3a side of each artificial tooth 3. When the distance between the artificial teeth is very or relatively short, it is difficult to insert the artificial tooth holding plate according to the present invention into the oral cavity of the patient. Therefore, the holding plate is attached to the holding plate body 1 on the cut end 3b side of each artificial tooth 3. Provide an engaging portion 1c with a supporting member (not shown) that supports the main body 1, or provide an engaging portion 1c with a supporting member (not shown) that supports the holding plate main body 1 on the back surface of the holding plate main body 1. deep. The engaging portion 1c is a protrusion fitted in a hole provided in the supporting member in the embodiment shown in FIG. 1, and is fitted in the protrusion provided in the supporting member in the embodiment shown in FIG. Hole. The width of the holding plate body 1 may be a width that can be inserted into the oral cavity from the beginning, but the holding plate body 1 is provided on both sides of the artificial tooth 3 which is temporarily fixed by the wax material 2 of the holding plate body 1. The mounting plate 1d for stably mounting on a flat surface may be provided so as to be easily detached from the curved surface portion by bending or cutting with a knife or the like.
以上詳述した如き本発明に係る人工歯用保持板は、保持
板本体の前面が天然歯列の曲率半径の範囲内にある16mm
〜55mmの曲率半径で湾曲した曲面を有しており、その湾
曲した曲面の前面に前歯６歯の人工歯が天然歯と同じ配
列順序で蝋材により仮止めされており、各人工歯の歯頚
部が該保持板本体の歯頚部の端縁とそれぞれ5mm以下の
距離に配設されており、指頭を口腔内に挿入することな
く衛生的且つ容易に口腔内に保持板本体を挿入できるよ
うに保持板本体の蝋材により仮止めされている人工歯の
切端部側又は保持板本体の裏面に該保持板本体を支持す
る支持部材との係合部が設けられていて、口腔内に挿入
可能な横幅にして使用できるものであるから、保持板本
体に設けられている係合部に保持板本体を支持する支持
部材との係合させてその支持部材を介して支持すること
により患者の口腔内に挿入して総義歯の作成において最
も目立つ前歯を構成する人工歯が審美的に良好なもので
あるか否かを判断する“試適”を迅速且つ簡便に実施で
きるから総義歯の作成する際の人工歯の選択を容易に実
施でき、また製造は従来の人工歯用保持板と大きな変化
は無いから製造単価もほとんど変わることがないのであ
り、その歯科分野に貢献する処の非常に大きなものがあ
る。The artificial tooth holding plate according to the present invention as described in detail above has a holding plate body having a front surface within a radius of curvature of the natural dentition of 16 mm.
It has a curved surface with a radius of curvature of ~ 55 mm, and the artificial teeth with 6 front teeth are temporarily fixed to the front surface of the curved surface with a wax material in the same arrangement order as the natural teeth. The neck is arranged at a distance of 5 mm or less with the edge of the tooth neck of the holding plate body, so that the holding plate body can be hygienically and easily inserted into the oral cavity without inserting the fingertip into the oral cavity. An engaging portion with a support member supporting the holding plate body is provided on the cut end side of the artificial tooth temporarily fixed by the wax material of the holding plate body or on the back surface of the holding plate body, and can be inserted into the oral cavity Since it can be used with a wide lateral width, the engaging portion provided on the holding plate main body is engaged with the supporting member supporting the holding plate main body and is supported through the supporting member to support the oral cavity of the patient. Insert the inside to form the most prominent anterior tooth in creating a complete denture. The "trial" to judge whether or not the artificial tooth is aesthetically good can be carried out quickly and easily, so that it is possible to easily select the artificial tooth when creating a complete denture, and to manufacture it conventionally. Since the holding plate for artificial teeth does not change much, the manufacturing unit price hardly changes, and there is a very large contribution to the dental field.
第１図は本発明に係る上顎用人工歯保持板の１実施例の
正面図、第２図は同底面図、第３図は第１図におけるＡ
−Ａ線拡大断面図、第４図は本発明に係る上顎用人工歯
保持板の他の実施例の正面図、第５図は第４図における
Ｂ−Ｂ線断面図である。 図面中 １……保持板本体 1a……装着用凹部 1b……端縁 1c……係合部 1d……載置板 ２……蝋材 ３……人工歯 3a……歯頚部 3b……切端部FIG. 1 is a front view of an embodiment of the artificial tooth holding plate for the upper jaw according to the present invention, FIG. 2 is a bottom view of the same, and FIG. 3 is A in FIG.
-A line enlarged sectional view, FIG. 4 is a front view of another embodiment of the upper jaw artificial tooth holding plate according to the present invention, and FIG. 5 is a BB line sectional view in FIG. In the drawing 1 ... Holding plate body 1a ... Mounting recess 1b ... Edge 1c ... Engagement part 1d ... Mounting plate 2 ... Wax material 3 ... Artificial tooth 3a ... Tooth neck 3b ... Cut edge Department
Claims (3)
面を有している保持板本体（１）の前面に前歯６歯の人
工歯（３）が天然歯と同じ配列順序で蝋材（２）により
仮止めされていて、各人工歯（３）の歯頸部（3a）が該
保持板本体（１）の端縁（1b）とそれぞれ5mm以下の距
離に配列されており、保持板本体（１）の蝋材（２）に
より仮止めされている人工歯（３）の切端部（3b）側又
は保持板本体（１）の裏面に該保持板本体（１）を支持
する支持部材との係合部（1c）が設けられていて、口腔
内に挿入可能な横幅にして使用できることを特徴とする
人工歯用保持板。1. A brazing material having six front teeth artificial teeth (3) on the front surface of a holding plate body (1) having a curved surface with a radius of curvature of 16 mm to 55 mm in the same arrangement order as natural teeth. Temporarily fixed by (2), the tooth neck portion (3a) of each artificial tooth (3) is arranged at a distance of 5 mm or less with the end edge (1b) of the holding plate body (1), respectively. Support for supporting the holding plate body (1) on the cut end portion (3b) side of the artificial tooth (3) temporarily fixed by the wax material (2) of the plate body (1) or on the back surface of the holding plate body (1) An artificial tooth holding plate, which is provided with an engaging portion (1c) for engaging with a member and can be used with a lateral width that can be inserted into the oral cavity.
の装着用凹部（1c）を有している特許請求の範囲第１項
に記載の人工歯用保持板。2. The holding plate body (1) has a wax material (2) on its front surface.
The artificial tooth holding plate according to claim 1, which has a mounting recess (1c).
（３）の両側の保持板本体（１）に保持板本体（１）を
平面に安定して載置させるための載置板（1d）が離脱容
易に設けられている特許請求の範囲第１項又は第２項に
記載の人工歯用保持板。3. A mounting for stably mounting the holding plate main body (1) on a flat surface on the holding plate main body (1) on both sides of the artificial tooth (3) temporarily fixed by the wax material (2). The artificial tooth holding plate according to claim 1 or 2, wherein the plate (1d) is provided so as to be easily separated.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249384A JPH0720479B2 (en) | 1987-10-02 | 1987-10-02 | Retaining plate for artificial teeth |
| DE19883831919 DE3831919A1 (en) | 1987-10-02 | 1988-09-20 | Plate for holding artificial teeth |
| CH360988A CH677600A5 (en) | 1987-10-02 | 1988-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249384A JPH0720479B2 (en) | 1987-10-02 | 1987-10-02 | Retaining plate for artificial teeth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0191856A JPH0191856A (en) | 1989-04-11 |
| JPH0720479B2 true JPH0720479B2 (en) | 1995-03-08 |
Family
ID=17192202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62249384A Expired - Lifetime JPH0720479B2 (en) | 1987-10-02 | 1987-10-02 | Retaining plate for artificial teeth |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0720479B2 (en) |
| CH (1) | CH677600A5 (en) |
| DE (1) | DE3831919A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0564338A (en) * | 1991-09-04 | 1993-03-12 | Yazaki Corp | Protector and cable storing method |
| DE19508761A1 (en) * | 1995-03-10 | 1996-09-12 | Ivoclar Ag | Tooth holder plate |
| DE19508760A1 (en) * | 1995-03-10 | 1996-09-12 | Ivoclar Ag | Tooth holder plate |
| DE10114493B4 (en) * | 2001-03-25 | 2007-07-19 | Jan Langner Gmbh | Method and device for separating dental models |
| GB0327698D0 (en) * | 2003-11-28 | 2003-12-31 | Renishaw Plc | Method and apparatus for scanning |
| JP4704450B2 (en) * | 2008-04-22 | 2011-06-15 | 株式会社松風 | Mold guide |
| FR3119761B1 (en) * | 2021-02-17 | 2023-06-30 | Dental Monitoring | Acquisition KIT |
-
1987
- 1987-10-02 JP JP62249384A patent/JPH0720479B2/en not_active Expired - Lifetime
-
1988
- 1988-09-20 DE DE19883831919 patent/DE3831919A1/en not_active Withdrawn
- 1988-09-28 CH CH360988A patent/CH677600A5/fr not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0191856A (en) | 1989-04-11 |
| CH677600A5 (en) | 1991-06-14 |
| DE3831919A1 (en) | 1989-04-20 |
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