JPH0827076B2 - Liquid fuel combustion device - Google Patents
Liquid fuel combustion deviceInfo
- Publication number
- JPH0827076B2 JPH0827076B2 JP2220532A JP22053290A JPH0827076B2 JP H0827076 B2 JPH0827076 B2 JP H0827076B2 JP 2220532 A JP2220532 A JP 2220532A JP 22053290 A JP22053290 A JP 22053290A JP H0827076 B2 JPH0827076 B2 JP H0827076B2
- Authority
- JP
- Japan
- Prior art keywords
- blower
- combustion
- liquid fuel
- combustion cylinder
- air
- 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
Landscapes
- Direct Air Heating By Heater Or Combustion Gas (AREA)
- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は液体燃料燃焼装置の改良に関するものであ
る。Description: [Industrial application] The present invention relates to an improvement in a liquid fuel combustion apparatus.
［従来の技術］ 従来のこの種の液体燃料燃焼装置としては、第５図〜
第７図に示すものがあった。第５図は従来の液体燃料燃
焼装置の構成を示す正面断面図、第６図はその側面断面
図、第７図は第５図，第６図に示す液体燃料燃焼装置の
風洞および燃焼筒周辺を上から見た部分断面図で、各図
において（１）は気化器、（２）は気化室、（３）はス
ロート、（４）は予熱ヒータ、（５）は給油管、（６）
は噴出ノズル、（6a）は噴出ノズル（６）のノズル孔、
（７）は気化室（２）と噴出ノズル（６）とを連結する
連結パイプ、（８）はニードルパイプ、（９）はニード
ル、（10）は電磁弁、（11）は弁機構、（12）は気化器
（１）の温度を検出するサーミスタ、（13）は一次空気
を取り入れる空気取入孔、（14）は送油管、（15）は給
油ポンプ、（16）は油受皿、（17）はカートリッジタン
ク、（18）はカートリッジタンク（17）の給油口キャッ
プ、（19）は給油口キャップ（18）の口を開閉する口
金、（20）は遮熱板、（21）は燃焼筒、（22）は気化器
（１）の周囲を囲う気化器カバー、（23）はパッキン、
（24）は気化器カバー（22）を支える気化器取付脚、
（25）は風洞、（26）は送風機、（26a）は送風機カバ
ー、（27）はバーナヘッド、（28）は火炎、（28a）は
二次火炎、（29）の実線の矢印は燃焼ガスの流れ、（3
0）はケーシング、（31）は温風吹出口、（32）の点線
の矢印は冷風の流れを示す。[Prior Art] A conventional liquid fuel combustion apparatus of this type is shown in FIG.
There was one shown in FIG. FIG. 5 is a front sectional view showing the structure of a conventional liquid fuel combustion apparatus, FIG. 6 is a side sectional view thereof, and FIG. 7 is a wind tunnel and a periphery of a combustion tube of the liquid fuel combustion apparatus shown in FIGS. In the respective drawings, (1) is a carburetor, (2) is a vaporization chamber, (3) is a throat, (4) is a preheating heater, (5) is an oil supply pipe, and (6) is a partial sectional view of FIG.
Is a jet nozzle, (6a) is a nozzle hole of the jet nozzle (6),
(7) is a connecting pipe that connects the vaporization chamber (2) and the ejection nozzle (6), (8) is a needle pipe, (9) is a needle, (10) is an electromagnetic valve, (11) is a valve mechanism, and ( (12) is a thermistor for detecting the temperature of the carburetor (1), (13) is an air intake hole for taking in primary air, (14) is an oil feed pipe, (15) is an oil supply pump, (16) is an oil pan, ( 17) is a cartridge tank, (18) is a filler cap of the cartridge tank (17), (19) is a base for opening and closing the filler cap (18), (20) is a heat shield, and (21) is combustion. A cylinder, (22) a carburetor cover surrounding the carburetor (1), (23) a packing,
(24) is a carburetor mounting leg that supports the carburetor cover (22),
(25) is a wind tunnel, (26) is a blower, (26a) is a blower cover, (27) is a burner head, (28) is a flame, (28a) is a secondary flame, and the solid arrow in (29) is a combustion gas. Flow of ((3
0) is the casing, (31) is the hot air outlet, and the dotted arrow in (32) is the cold air flow.
次に動作について説明する。運転スイッチ（図示せ
ず）をON状態とし、予熱ヒータ（４）に通電を行い、液
体燃料を気化するのに必要な温度まで気化器（１）を予
熱する。気化器（１）の予熱が完了すると、サーミスタ
（12）がこれを検知して運転が開始され、給油ポンプ
（15）が動作して、油受皿（16）から液体燃料が送油管
（14）を介し気化室（２）へ送り込まれ、気化室（２）
で加熱されて気化され気化ガスとなる。Next, the operation will be described. The operation switch (not shown) is turned on, the preheat heater (4) is energized, and the vaporizer (1) is preheated to a temperature necessary for vaporizing the liquid fuel. When the preheating of the carburetor (1) is completed, the thermistor (12) detects this and the operation is started, the oil supply pump (15) operates, and the liquid fuel is fed from the oil pan (16) to the oil feed pipe (14). Is sent to the vaporization chamber (2) via the
Is heated and vaporized to become vaporized gas.
そして気化室（２）内に十分に気化された気化ガスが
満たされた時点で、本来の燃焼動作に移行すべく電磁弁
（10）が開かれ、噴出ノズル（６）のノズル孔（6a）か
ら燃料ガスが噴出される。When the vaporized chamber (2) is filled with the sufficiently vaporized vaporized gas, the solenoid valve (10) is opened to shift to the original combustion operation, and the nozzle hole (6a) of the jet nozzle (6) is opened. Fuel gas is ejected from.
ノズル孔（6a）から噴出する燃焼ガスは、エジェクタ
ー効果により、ノズル孔径，スロート径で決定される一
定量の一次空気が、空気取入孔（13）から吸引されて一
定の一次空気比の混合ガスとなる。The combustion gas ejected from the nozzle hole (6a) has a certain amount of primary air determined by the nozzle hole diameter and throat diameter due to the ejector effect, and is sucked from the air intake hole (13) to mix with a constant primary air ratio. It becomes gas.
そして混合ガスが気化器（１）の熱で気化されて気化
ガスとなり、バーナヘッド（27）に設けられた炎孔（27
a）から燃焼筒（21）内に噴出され、適宜の着火源（図
示せず）により点火されて火炎（28）を形成し、燃焼筒
（21）の上部で二次火炎（28a）を形成し、高温の燃焼
ガス（29）となる。Then, the mixed gas is vaporized by the heat of the vaporizer (1) to become vaporized gas, and the flame holes (27) provided in the burner head (27) are provided.
It is ejected from the a) into the combustion cylinder (21) and ignited by an appropriate ignition source (not shown) to form a flame (28), and the secondary flame (28a) is generated at the upper part of the combustion cylinder (21). They form and become hot combustion gases (29).
高温の燃焼ガス（29）は燃焼筒（21）を上昇し、燃焼
筒（21）上部で送風機（26）から押し込まれてくる冷風
（32）と混合して温風となり、さらに送風機（26）から
押し込まれる冷風（32）によって風洞（25）を通って前
面に押し出され、温風吹出口（31）から放出され、これ
によって室内を暖房している。The high-temperature combustion gas (29) rises in the combustion cylinder (21), mixes with the cool air (32) pushed from the blower (26) at the upper part of the combustion cylinder (21) to become warm air, and further the blower (26). The cold wind (32) pushed in from the air passes through the wind tunnel (25) and pushes it out to the front side, and is discharged from the warm air outlet (31), thereby heating the room.
［発明が解決しようとする課題］ 上記のような従来の液体燃料燃焼装置は以上のように
構成されているので、例えば送風機やケーシング背面の
送風機カバーに埃が付着したり、何らかの障害物で温風
吹出口が塞がれたような場合には、送風機から押し込ま
れる冷風量が低下してしまう。[Problems to be Solved by the Invention] Since the conventional liquid fuel combustion apparatus as described above is configured as described above, for example, dust may be attached to the blower or the blower cover on the back of the casing, or heat may be generated due to some obstacle. If the air outlet is blocked, the amount of cold air pushed in by the blower will decrease.
このため、第６図，第７図に示すように、いわゆる二
次火炎が拡がってしまって、燃焼筒に二次火炎が接触
し、燃焼筒の温度を上昇させて装置内部を高温化してし
まう。Therefore, as shown in FIGS. 6 and 7, the so-called secondary flame spreads, the secondary flame comes into contact with the combustion cylinder, and the temperature of the combustion cylinder is raised to raise the temperature inside the device. .
また、燃焼状態が安定せず、放出される排ガスのCO/C
O2特性が悪化する原因にもなる。In addition, the combustion state is not stable and CO / C of the exhaust gas emitted
It also causes deterioration of O 2 characteristics.
このような冷風量の低下によって起こる弊害を防止す
る手段としては、燃焼筒を大きくする手段があるが、燃
焼筒を大きくすると装置全体が大型化してしまうという
問題点があった。There is a means for enlarging the combustion cylinder as a means for preventing the adverse effect caused by such a decrease in the amount of cold air, but there is a problem that if the combustion cylinder is enlarged, the entire apparatus becomes large.
この発明はかかる課題を解決するためになされたもの
で、装置を大型化する必要なく、冷風量が低下した場合
でも火炎が燃焼筒に接触せず、安定した燃焼が行える液
体燃料燃焼装置を得ることを目的としている。The present invention has been made to solve the above problems, and it is not necessary to upsize the apparatus, and even if the amount of cold air decreases, the flame does not contact the combustion cylinder, and a liquid fuel combustion apparatus that can perform stable combustion is obtained. Is intended.
［課題を解決するための手段］ この発明に係わる液体燃料燃焼装置は、燃焼筒に、バ
ーナヘッドに設けられた炎孔より高い位置で、且つ装置
前面から見て送風機の回転方向と同方向側の斜め背面
に、送風機からの冷風の一部を燃焼筒内壁面に沿って流
す送風窓を備えたものである。[Means for Solving the Problems] A liquid fuel combustion apparatus according to the present invention is located in a combustion cylinder at a position higher than a flame hole provided in a burner head and in the same direction as the rotation direction of a blower when viewed from the front of the apparatus. Is provided on the diagonal rear surface of the blower with a blower window for allowing a part of the cool air from the blower to flow along the inner wall surface of the combustion cylinder.
［作用］ この発明の液体燃料燃焼装置においては、燃焼筒に送
風窓を備えることとしたので、送風機からの風量が低下
した場合でも、燃焼筒と火炎との間にエアーカーテンを
形成することが可能となる。[Operation] In the liquid fuel combustion apparatus of the present invention, since the combustion cylinder is provided with the blower window, even if the air volume from the blower is reduced, an air curtain can be formed between the combustion cylinder and the flame. It will be possible.
［実施例］ 以下、この発明の一実施例を図面を用いて説明する。
第１図，第２図はそれぞれこの発明の一実施例を示す図
で、第１図はこの実施例における液体燃料燃焼装置の風
洞および燃焼筒周辺を上から見た部分断面図、第２図は
この実施例における液体燃料燃焼装置の側面一部断面図
で、各図において第５図〜第７図と同一符号は同一また
は相当部分を示し、（40）は燃焼筒（21）に設けられた
鎧板を持つ送風窓（以下、これを鎧窓と言う）であり、
この鎧窓（40）はバーナヘッド（27）より高い位置で、
且つ送風機（26）が右回りに回転する場合には装置前面
から見て燃焼筒（21）の右斜め背面に、送風機（26）が
左回りに回転する場合には装置前面から見て燃焼筒（2
1）の左斜め背面に、設けられている。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
1 and 2 are views showing an embodiment of the present invention, respectively, and FIG. 1 is a partial cross-sectional view of the wind tunnel and the periphery of a combustion tube of a liquid fuel combustion apparatus in this embodiment as seen from above, FIG. Is a partial side sectional view of the liquid fuel combustion apparatus in this embodiment. In each drawing, the same reference numerals as those in FIGS. 5 to 7 indicate the same or corresponding portions, and (40) is provided in the combustion cylinder (21). It is a blower window with an armor plate (hereinafter referred to as armor window),
This armor window (40) is higher than the burner head (27),
In addition, when the blower (26) rotates clockwise, it is on the diagonal right side of the combustion tube (21) when viewed from the front of the device, and when the blower (26) rotates counterclockwise, it is the combustion tube when viewed from the front of the device. (2
It is provided on the diagonally left back of 1).
そして、この鎧窓（40）が設けられることによって、
送風機（26）が運転された場合、第１図の点線の矢印
（32）に示すように、送風機（26）からの冷風が鎧窓
（40）から燃焼筒（21）内部へ入り込み、円筒状の燃焼
筒（21）内部曲面のアールに沿って入り込んだ冷風（3
2）が流れるようになる。And by providing this armor window (40),
When the blower (26) is operated, as shown by the dotted arrow (32) in FIG. 1, cold air from the blower (26) enters the combustion tube (21) through the armor window (40) and is cylindrical. Cold air (3) that entered along the radius of the inner surface of the combustion cylinder (21)
2) comes to flow.
したがって、例えば送風機（26）や送風機カバー（26
a）に埃が付着したり、何らかの障害物で温風吹出口（3
1）が塞がれ、送風機（26）から装置内部に押し込まれ
る冷風量が低下してしまったような場合でも、燃焼筒
（21）と二次火炎（28a）との間に、鎧窓（40）から入
り込む冷風（32）でいわゆるエアーカーテンが形成され
るため、燃焼筒（21）の壁面に二次火炎（28a）が接触
してしまうという事態を防止でき、燃焼筒（21）の温度
を上昇させることなく、安定した燃焼状態を維持でき、
暖房運転により排出される排ガスのCO/CO2特性も良好な
ものが得られる。Therefore, for example, the blower (26) or the blower cover (26
Dust adheres to a) or some obstacles cause the hot air outlet (3
Even if 1) is blocked and the amount of cold air pushed into the inside of the device from the blower (26) is reduced, an armor window () is formed between the combustion tube (21) and the secondary flame (28a). Since the so-called air curtain is formed by the cold air (32) entering from 40), it is possible to prevent the situation where the secondary flame (28a) comes into contact with the wall surface of the combustion tube (21) and the temperature of the combustion tube (21). It is possible to maintain a stable combustion state without raising
Good CO / CO 2 characteristics of the exhaust gas emitted by heating operation can be obtained.
なお、鎧窓（40）をバーナヘッド（27）に設けられた
炎孔（27a）より低い位置に設けると、火力の弱い低燃
焼時に鎧窓（40）から入る冷風（32）によって一次火炎
（28）が煽られ、排ガスのCO/CO2特性が悪くなるので、
鎧窓（40）はバーナヘッド（27）に設けられた炎孔（27
a）より必ず上に設けておく必要がある。If the armor window (40) is provided at a position lower than the flame hole (27a) provided in the burner head (27), the primary flame ( 28) is agitated and the CO / CO 2 characteristics of the exhaust gas deteriorate,
The armor window (40) is a flame hole (27) provided in the burner head (27).
It must be installed above a).
また、燃焼筒（21）の内壁面にエアーカーテンを形成
する冷風（32）を取り入れる送風窓の形状を、鎧板を持
つ鎧窓（40）とすることによって、縦長の一定幅の窓を
形成することができ、窓に埃が付きにくく、且つ必要な
幅のエアーカーテンを容易に形成することができる。In addition, the shape of the blower window that takes in the cold air (32) that forms the air curtain on the inner wall surface of the combustion tube (21) is an armor window (40) having an armor plate, thereby forming a vertically long window of a constant width. It is possible to prevent dust from adhering to the window and to easily form the air curtain having a required width.
第３図，第４図はそれぞれこの発明の他の実施例を示
す図で、この実施例では鎧窓（40）に案内板（41）を取
り付けるようにしたもので、送風機（26）による送風を
より積極的に鎧窓（40）へ導くことができる。3 and 4 are views showing other embodiments of the present invention. In this embodiment, a guide plate (41) is attached to the armor window (40), and a blower (26) blows air. Can be more actively guided to the armor window (40).
また、案内板（41）を設けることにより、燃焼筒（2
1）と風洞（25）側面との間をしっかり固定させること
ができ、製品間で燃焼筒（21）と風洞（25）との間隔の
ばらつきがなくなる。したがって、この間隔のばらつき
による排ガスのCO/CO2特性の悪化や燃焼筒（21）温度の
不安定化も防止できるようになる。Further, by providing the guide plate (41), the combustion cylinder (2
1) and the side of the wind tunnel (25) can be firmly fixed, and there is no variation in the distance between the combustion cylinder (21) and the wind tunnel (25) between products. Therefore, it is possible to prevent the deterioration of the CO / CO 2 characteristic of the exhaust gas and the instability of the temperature of the combustion tube (21) due to the variation in this interval.
［発明の効果］ この発明は以上説明したように、燃焼筒に送風窓を形
成し、この窓で送風機からの冷風を取り入れ、取り入れ
た冷風を円筒状の燃焼筒内部曲面に沿って流す構成とし
たので、装置を大型化することなく、送風量が低下した
ような場合でも火炎が燃焼筒壁面に接触することを防止
でき、燃焼筒温度を低く押さえた排ガス特性の良い装置
が得られるという効果がある。[Effects of the Invention] As described above, the present invention has a structure in which a blower window is formed in a combustion cylinder, cold air from a blower is taken in through this window, and the taken-in cool air is made to flow along a curved surface of a cylindrical combustion cylinder. Therefore, without increasing the size of the device, it is possible to prevent the flame from contacting the wall surface of the combustion cylinder even when the amount of blown air is reduced, and it is possible to obtain a device with good exhaust gas characteristics that keeps the combustion cylinder temperature low. There is.
第１図，第２図はこの発明の一実施例を示す図、第３
図，第４図はこの発明の他の実施例を示す図、第５図〜
第７図は従来の液体燃料燃焼装置を示す図である。 図において（21）は燃焼筒、（25）は風洞、（26）は送
風機、（26a）は送風機カバー、（27）はバーナヘッ
ド、（27a）は炎孔、（28）は火炎、（28a）は二次火
炎、（32）は冷風の流れ、（40）は鎧窓、（41）は案内
板を示す。 なお、各図中同一符号は同一または相当部分を示すもの
とする。1 and 2 are views showing an embodiment of the present invention, and FIG.
4 and 5 are views showing another embodiment of the present invention, and FIGS.
FIG. 7 is a diagram showing a conventional liquid fuel combustion apparatus. In the figure, (21) is a combustion cylinder, (25) is a wind tunnel, (26) is a blower, (26a) is a blower cover, (27) is a burner head, (27a) is a flame hole, (28) is a flame, (28a ) Is the secondary flame, (32) is the flow of cold air, (40) is the armor window, and (41) is the guide plate. In the drawings, the same reference numerals indicate the same or corresponding parts.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 寺内 利和 群馬県新田郡尾島町大字岩松800番地 三 菱電機株式会社群馬製作所内 (72)発明者 和田 好文 群馬県新田郡尾島町大字岩松800番地 三 菱電機エンジニアリング株式会社東京事業 所群馬支所内 (56)参考文献 実開 昭61−18460（ＪＰ，Ｕ) 実開 昭61−186054（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshikazu Terauchi 800 Iwamatsu, Oshima-cho, Nitta-gun, Gunma Sanryo Electric Co., Ltd.Gunma Plant (72) Yoshifumi Wada 800 Iwamatsu, Ojima-cho, Nitta-gun, Gunma Address Sanryo Denki Engineering Co., Ltd. Tokyo Office Gunma Branch (56) References Open 61-18460 (JP, U) Open 61-186054 (JP, U)
Claims (1)
のバーナヘッドの周囲を覆う燃焼筒と、本体内に空気を
送り込み上記バーナヘッドから発生する熱気と混合させ
て温風を吹き出す送風機とを備えた液体燃料燃焼装置に
おいて、 上記燃焼筒に、上記バーナヘッドに設けられた炎孔より
高い位置で、且つ装置前面から見て上記送風機の回転方
向と同方向側の斜め背面に、上記送風機からの冷風の一
部を上記燃焼筒内に取り込み該燃焼筒内壁面に沿って流
す送風窓を備えたことを特徴とする液体燃料燃焼装置。1. A burner head that burns liquid fuel, a combustion cylinder that covers the periphery of the burner head, and a blower that blows warm air by sending air into the main body and mixing it with the hot air generated from the burner head. In the above liquid fuel combustion apparatus, the combustion cylinder is provided at a position higher than the flame holes provided in the burner head, and on the oblique rear surface in the same direction as the rotation direction of the blower when viewed from the front of the apparatus. A liquid fuel combustion apparatus comprising a blower window that takes in a part of cold air into the combustion cylinder and causes it to flow along the inner wall surface of the combustion cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2220532A JPH0827076B2 (en) | 1990-08-22 | 1990-08-22 | Liquid fuel combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2220532A JPH0827076B2 (en) | 1990-08-22 | 1990-08-22 | Liquid fuel combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04103961A JPH04103961A (en) | 1992-04-06 |
| JPH0827076B2 true JPH0827076B2 (en) | 1996-03-21 |
Family
ID=16752473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2220532A Expired - Lifetime JPH0827076B2 (en) | 1990-08-22 | 1990-08-22 | Liquid fuel combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0827076B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3668069B2 (en) | 1999-09-21 | 2005-07-06 | 株式会社東芝 | Liquid fuel container for fuel cell and fuel cell |
-
1990
- 1990-08-22 JP JP2220532A patent/JPH0827076B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04103961A (en) | 1992-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0827076B2 (en) | Liquid fuel combustion device | |
| JP2527088B2 (en) | Liquid fuel combustion device | |
| JP2623030B2 (en) | Hot air heater | |
| JP2917079B2 (en) | Liquid fuel combustion device | |
| JPS6326677Y2 (en) | ||
| JP3062524B2 (en) | Liquid fuel combustion device | |
| JPH0631308Y2 (en) | Liquid fuel combustion device | |
| JP2745973B2 (en) | Liquid fuel combustion device | |
| JPH0752529Y2 (en) | Hot air heater | |
| JP3097413B2 (en) | Combustor | |
| JP2921153B2 (en) | Combustion equipment | |
| JP3877950B2 (en) | Evaporative combustion device | |
| JPH0113236Y2 (en) | ||
| JP2737572B2 (en) | Liquid fuel combustion device | |
| JP2924144B2 (en) | Combustion equipment | |
| JP4097393B2 (en) | Evaporative combustion device | |
| JP3237175B2 (en) | Combustion equipment | |
| JP2811993B2 (en) | Oil burning equipment | |
| JP2752992B2 (en) | Liquid fuel burner | |
| JPS5852445Y2 (en) | hot air heater | |
| JPS599136Y2 (en) | liquid fuel combustion equipment | |
| JP2567768Y2 (en) | Liquid fuel combustion device | |
| JP2713890B2 (en) | Vaporization type combustion device | |
| JPH05118667A (en) | Structure around the lower part of the combustor of a liquid fuel combustion device | |
| JP2982451B2 (en) | Liquid fuel combustion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080321 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090321 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100321 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100321 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110321 Year of fee payment: 15 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110321 Year of fee payment: 15 |