JPS6120183B2 - - Google Patents
Info
- Publication number
- JPS6120183B2 JPS6120183B2 JP10159980A JP10159980A JPS6120183B2 JP S6120183 B2 JPS6120183 B2 JP S6120183B2 JP 10159980 A JP10159980 A JP 10159980A JP 10159980 A JP10159980 A JP 10159980A JP S6120183 B2 JPS6120183 B2 JP S6120183B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- power supply
- switch
- power
- exchange
- 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
Links
- 238000000034 method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000001934 delay Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Devices For Supply Of Signal Current (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、給電方式に関し、特に交換機と端末
間でコード信号の送受信を行う手段を有する端末
に対して、交換機より給電を行う方式に関するも
のである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a power supply method, and particularly to a method for supplying power from an exchange to a terminal having means for transmitting and receiving code signals between the exchange and the terminal. It is.
従来の電話網においては、電話機と交換機間の
制御信号（発呼信号，選択信号，呼出信号など）
として直流のON／OFF、直流の極性リバース、
多周波信号を用いて端末間の接続動作が行なわれ
ている。該電話網に収容される電話機への給電に
ついては、発信側電話機は発呼から切断に到るま
で交換機から−48Vの直流給電を受け、着信側電
話機は呼出されているときは交換機から高レベル
の交流電圧（120V，16Hz）を受けベルを鳴ら
し、応答があればこのときから切断まで−48Vの
直流給電を受けるようになつている。
In conventional telephone networks, control signals (calling signals, selection signals, ringing signals, etc.) between telephones and exchanges
as DC ON/OFF, DC polarity reversal,
Connection operations between terminals are performed using multi-frequency signals. Regarding power supply to telephones accommodated in the telephone network, the calling telephone receives -48V DC power from the exchange from call origination to disconnection, and the receiving telephone receives high-level DC power from the exchange when it is being called. The system receives AC voltage (120V, 16Hz) and rings the bell, and if there is a response, it receives -48V DC power from this time until disconnection.
また、このような電話網にデータ端末、フアク
シミリ端末などの非電話系端末を収容するには、
加入者線を共用し電話機に付設した形がとられて
おり、この端末間の通信はまず電話機相互で接続
した後に端末側に切替えて行なつている。 In addition, in order to accommodate non-telephone terminals such as data terminals and facsimile terminals in such telephone networks,
The subscriber line is shared and attached to the telephone set, and communication between the terminals is performed by first connecting the telephone sets to each other and then switching to the terminal side.
さて、今後電話網の高度サービス化を図るに
は、電話機（以後、これも端末と呼ぶことにす
る。）あるいは電話機能付データ端末等と交換機
との間の制御信号として豊富な信号種別がとれる
コード信号を用いることが必要となる。 Now, in order to make the telephone network more advanced services in the future, a wide variety of signal types will be available as control signals between telephones (hereinafter referred to as terminals) or data terminals with telephone functions, etc. and exchanges. It is necessary to use code signals.
このように端末と交換機間の制御信号としてコ
ード信号を用いた通信網においても、端末に対し
て従来の電話網と同様−48V直流給電すればこれ
によつて端末の電源回路を駆動させてコード信号
の送受を可能にすることができる。 Even in communication networks that use code signals as control signals between terminals and exchanges, if -48V DC power is supplied to the terminals as in conventional telephone networks, this will drive the terminal's power supply circuit and transmit the code. It is possible to send and receive signals.
しかし、従来の給電手順をそのまま適用する
と、着信側にまわつた端末は、−48V直流給電を
応答後しか受けることができなく、呼出信号につ
いては高レベルの交流電圧（120V，16Hz）をそ
のまま用いることになり、素子耐圧や回路の安定
性等に問題を生じる。 However, if the conventional power supply procedure is applied as is, the terminal on the receiving side will only be able to receive -48V DC power after a response, and the high-level AC voltage (120V, 16Hz) will be used as is for the ringing signal. This causes problems with element breakdown voltage, circuit stability, and the like.
本発明の目的は、この問題を解決するために、
交換機から着信側端末への給電を呼出信号送出前
にできるようにし、呼出信号もコード信号として
の送出を可能として、交換機と端末間のすべての
制御信号をコード信号で送出できる給電方式を提
供することにある。
The purpose of the present invention is to solve this problem by
To provide a power supply system that allows power to be supplied from an exchange to a called terminal before sending out a calling signal, allows the calling signal to be sent as a code signal, and allows all control signals between the exchange and the terminal to be sent as code signals. There is a particular thing.
本発明の給電方式は、端末が交換機から給電を
受けながら、交換機と端末間の制御をすべてコー
ド信号で送受できるようにするために、発信時は
端末の発呼操作によつて端末の電源回路が交換機
の給電用電池から給電を受けられるようにすると
ともに、電流ループ保持回路を働かせ、この後に
コード信号の送受を行い、着信時は交換機が給電
用電池の極性を反転させることによつて直ちに端
末の電源回路が給電状態になるようにし、この後
にコード信号の送受を行い、切断時は切断の手順
が交換機と端末間で完了した後に電流ループ保持
回路をリセツトさせて交換機からの給電を停止す
るようにしたことに特徴がある。
The power supply method of the present invention is such that, while the terminal receives power from the exchange, all controls between the exchange and the terminal can be transmitted and received using code signals. At the same time, the switch receives power from the power supply battery of the exchange, activates the current loop holding circuit, and then sends and receives the code signal. When a call is received, the exchange immediately reverses the polarity of the power supply battery. The terminal's power supply circuit enters the power supply state, after which code signals are sent and received, and when disconnecting, the current loop holding circuit is reset after the disconnection procedure is completed between the exchange and the terminal, and the power supply from the exchange is stopped. It is characterized by the fact that it is made to do so.
以下、本発明の実施例を図面により詳細に説明
する。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は、本発明の実施例を示す図であつて、
１は交換機、１１は給電回路、２は加入者線、２
１は加入者線のＡ線、２２は加入者線のＢ線、３
は端末、３１は直流遮断回路、３２は端末入出力
部、３３は電源回路スイツチ部、３４は電源回
路、４は電池、７は電源回路の内部インピーダン
ス、５１，６１はスイツチ、１３１はフツクスイ
ツチ等の発呼・応答操作に伴つて働き、オンフツ
ク（ON HOOK）時OFF状態で、オフフツク
（OFF HOOK）時ON状態となるスイツチ、２６
１，２６２はダイオード、１９０はスイツチ、１
７０はスイツチ１９０を働かせる電流ループ保持
回路、１８０は電流ループ保持回路１７０のリセ
ツト信号が入力されるリセツト端子である。 FIG. 1 is a diagram showing an embodiment of the present invention,
1 is an exchange, 11 is a power supply circuit, 2 is a subscriber line, 2
1 is subscriber line A, 22 is subscriber line B, 3
is a terminal, 31 is a DC cutoff circuit, 32 is a terminal input/output section, 33 is a power supply circuit switch section, 34 is a power supply circuit, 4 is a battery, 7 is an internal impedance of the power supply circuit, 51 and 61 are switches, 131 is a switch, etc. A switch that operates in conjunction with call/response operations, and is OFF when on-hook (ON HOOK) and ON when off-hook (OFF HOOK), 26
1,262 is a diode, 190 is a switch, 1
70 is a current loop holding circuit that operates the switch 190, and 180 is a reset terminal to which a reset signal of the current loop holding circuit 170 is input.
第２図は電流ループ保持回路１７０に対するリ
セツト信号の作成を説明するための図である。 FIG. 2 is a diagram for explaining the creation of a reset signal for the current loop holding circuit 170.
第３図は端末と交換機間におけるコード信号を
用いた制御信号の送受による接続シーケンスと制
御信号送受に対する給電期間を示す図である。 FIG. 3 is a diagram showing a connection sequence for transmitting and receiving control signals using code signals between a terminal and an exchange, and a power supply period for transmitting and receiving control signals.
第４図はフツクスイツチの状態とコード信号の
送受信可能期間と電源回路の通電状態に対するタ
イムチヤートを示す図である。 FIG. 4 is a diagram showing a time chart for the state of the switch, the period during which code signals can be transmitted and received, and the energization state of the power supply circuit.
第３図において、斜線で囲まれた部分は交換機
が端末に対して給電中であることを示しており、
さらに、発着信相互の端末が交換機を介して行な
われる発呼から終話までの接続シーケンスを示し
ている。この接続シーケンス上の制御信号はコー
ド信号であるから、コード信号の送受を可能にす
るためには、交換機は発着をとわず端末に対して
端末が最初の信号を送信する前に給電を行ない、
端末が最後の信号を送信した後に給電を停止する
必要がある。これを実現したのが本発明である。 In Figure 3, the area surrounded by diagonal lines indicates that the exchange is supplying power to the terminal.
Furthermore, it shows the connection sequence from call origination to end of call, which is performed between the terminals of the originating and terminating parties via an exchange. The control signal in this connection sequence is a code signal, so in order to enable the transmission and reception of code signals, the exchange must supply power to the terminal before the terminal sends the first signal, regardless of whether it is arriving or departing. ,
The power supply must be stopped after the terminal sends the last signal. The present invention realizes this.
本発明の実施例についてその動作を説明する。
交換機１と端末３とのコード信号の送受信は、交
換機１と端末３の端末入出力部３２が加入者線２
と直流遮断回路３１を介して行ない、この端末入
出力部３２は電源回路３４が交換機１の給電回路
１１から給電を受けているときのみ動作できる。
端末が空き状態にあるときは、給電回路１１のス
イツチ５１はON状態に、スイツチ６１はOFF状
態（これをノーマル状態という。）になつてい
る。この状態にある端末が、フツキング等の発呼
操作を行なうと、電源回路スイツチ部３３のフツ
クスイツチ（図示していない。）と連動している
スイツチ１３１がON状態になつて、電源回路３
４は交換機１の電池４からインピーダンス７とス
イツチ５１と加入者線２とダイオード２６１を介
して給電を受け動作する。これによつて、端末入
出力部３２は動作可の状態になつて、交換機１と
のコード信号送受信が可能となる。同時に、電流
ループ保持回路１９０が働いて、スイツチ１９０
をON状態にする。一方、交換機１が端末に着信
させる場合には、まず、給電回路１１のスイツチ
５１をOFF状態、スイツチ６１をON状態（これ
をリバース状態という。）にする。これによつ
て、着信側端末は、電源回路３４が電池４からイ
ンピーダンス７とスイツチ６１と加入者線２とダ
イオード２６２を介して給電を受け動作し、続い
て端末入出力部３２が動作可の状態になつて、交
換機１からの呼出信号をコード信号で受けて呼出
し処理を行なうことができる。同時に、電流ルー
プ保持回路１９０が働いて、スイツチ１９０を
ON状態にする。この着信側端末に対しては、交
換機１からの給電を通信の終了までリバース状態
のまま継続させてもよいし、端末がオフフツク等
の応答操作があつてスイツチ１３１がON状態に
なつた後に、ノーマル状態に戻して給電してもよ
い。 The operation of an embodiment of the present invention will be explained.
The transmission and reception of code signals between the exchange 1 and the terminal 3 is carried out by the terminal input/output section 32 of the exchange 1 and the terminal 3 using the subscriber line 2.
This terminal input/output section 32 can operate only when the power supply circuit 34 receives power from the power supply circuit 11 of the exchange 1.
When the terminal is in an idle state, the switch 51 of the power supply circuit 11 is in the ON state, and the switch 61 is in the OFF state (this is called a normal state). When the terminal in this state performs a calling operation such as hooking, the switch 131 that is linked to the hook switch (not shown) of the power circuit switch section 33 turns on, and the power circuit 3
4 receives power from the battery 4 of the exchange 1 via the impedance 7, the switch 51, the subscriber line 2, and the diode 261 to operate. As a result, the terminal input/output section 32 becomes operational, and can transmit and receive code signals to and from the exchange 1. At the same time, the current loop holding circuit 190 operates and the switch 190
Turn on. On the other hand, when the exchange 1 wants a terminal to receive a call, it first turns the switch 51 of the power supply circuit 11 into the OFF state and the switch 61 into the ON state (this is called a reverse state). As a result, the receiving side terminal receives power from the battery 4 through the impedance 7, the switch 61, the subscriber line 2, and the diode 262, and operates the terminal, and then the terminal input/output section 32 becomes operational. state, it is possible to receive a calling signal from the exchange 1 in the form of a code signal and perform a calling process. At the same time, current loop holding circuit 190 operates to hold switch 190.
Turn it on. For this receiving terminal, the power supply from the exchange 1 may be continued in the reverse state until the end of the communication, or after the terminal receives a response operation such as off-hook and the switch 131 is turned on, Power may be supplied after returning to the normal state.
給電の停止については、発信側端末が着信側端
末より先にオンフツク等の切断操作を行なうと、
端末入出力部３２は切断要求と判断して、交換機
１に切断信号を送信する。このとき、スイツチ１
３１は直ちに復旧するが、スイツチ１９０はON
HOOKの信号が第２図に示す遅延回路２６０に
よつて切断信号が交換機に到達できる保証時間tG
だけ遅延して電流ループ保持回路１７０のリセツ
ト端子１８０に入力され、スイツチ１３１より保
証期間tGだけ遅れて復旧する。一方、着信側端末
についてもオンフツク等の切断操作あれば、切断
確認信号を送信し、スイツチ１３１は直ちに復旧
し、スイツチ１９０はスイツチ１３１より保証時
間tGだけ遅れて復旧する。 Regarding stopping the power supply, if the calling terminal performs a disconnection operation such as on-hook before the receiving terminal,
The terminal input/output unit 32 determines that this is a disconnection request and transmits a disconnection signal to the exchange 1. At this time, switch 1
31 is restored immediately, but switch 190 is ON.
Guaranteed time tG for the HOOK signal to reach the switch by the delay circuit 260 shown in FIG.
It is input to the reset terminal 180 of the current loop holding circuit 170 with a delay of tG, and is restored with a delay of the guarantee period tG from the switch 131. On the other hand, if there is a disconnection operation such as on-hook on the receiving side terminal, a disconnection confirmation signal is sent, and the switch 131 is immediately restored, and the switch 190 is restored after a guaranteed time tG than the switch 131.
逆に、着信側端末が発信側端末より先にオンフ
ツク等の切断操作をしても、スイツチ１３１とス
イツチ１９０の動作は前記と同様である。オンフ
ツク動作時送受される信号の方向と種別は第３図
に示す通りである。 Conversely, even if the called terminal performs a disconnection operation such as on-hook before the calling terminal, the operations of switch 131 and switch 190 are the same as described above. The directions and types of signals transmitted and received during on-hook operation are as shown in FIG.
以上の動作におけるタイムチヤートを第４図に
示している。発信側端末は、オフフツクが行なわ
れると電源回路３４が通電状態になりその後にコ
ード信号の送受信が可能となり、オンフツクがあ
るとオンフツク時点からしばらくは依然としてコ
ード信号の送受信と可能とし、これを保証するた
めに電源回路３４の通電状態がオフフツクの時点
からtGまで継続させる。一方、、着信側端末はま
ず電源回路３４を通電状態にしコード信号の送受
信を可能とし、オフフツクを受けられる状態とす
る。オンフツク時は発信側端末と同じタイムチヤ
ートで動作する。 A time chart for the above operation is shown in FIG. When the off-hook is performed, the power supply circuit 34 of the transmitting side terminal becomes energized, and it becomes possible to transmit and receive code signals after that, and if there is an on-hook, it is still possible to transmit and receive code signals for a while after the on-hook, and this is guaranteed. Therefore, the power supply circuit 34 is kept energized from the time of off-hook until tG . On the other hand, the receiving terminal first turns on the power supply circuit 34 to enable transmission and reception of code signals, and is in a state in which it can receive off-hook. When on-hook, it operates on the same time chart as the calling terminal.
以上説明したように、本発明によれば、着呼時
に、自動的に端末の電源回路を駆動し、安定化さ
せてからコード信号を用いた制御信号が送受信さ
れるので、交換機側からベル鳴動用の大振幅の交
流信号を送出しなくてもコード信号の呼出信号に
より端末側の発振器を動作させて呼出音を発生さ
せたり、端末の自動応答を行なうことができる。
As explained above, according to the present invention, when a call arrives, the power supply circuit of the terminal is automatically driven and stabilized before a control signal using a code signal is transmitted and received. Even without sending out a large-amplitude alternating current signal, it is possible to operate the oscillator on the terminal side using the ringing signal of the code signal to generate a ringing tone or to automatically answer the terminal.
第１図は本発明の実施例を示す図、第２図は電
流ループ保持回路１７０に対するリセツト信号の
作成を説明するための図、第３図は接続シーケン
スと給電期間との関係を説明するための図、第４
図は実施例のタイムチヤートを示す図である。
１……交換機、１１……給電回路、２……加入
者線、２１……加入者線のＡ線、２２……加入者
線のＢ線、３……端末、３１……直流遮断回路、
３２……端末入出力部、３３……電源回路スイツ
チ部、３４……電源回路、４……電池、５１，６
１……スイツチ、７……電源回路の内部インピー
ダンス、１３１……フツクスイツチ等の操作に連
動したスイツチ、１７０……電流ループ保持回
路、１８０……電流ループ保持回路１７０のリセ
ツト端子、１９０……電流ループ保持回路１７０
が動作したときにON状態となるスイツチ、２６
１，２６２……ダイオード、２６０……遅延回
路。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram for explaining the creation of a reset signal for the current loop holding circuit 170, and FIG. 3 is a diagram for explaining the relationship between the connection sequence and the power supply period. Figure 4
The figure is a diagram showing a time chart of an example. 1... Exchange, 11... Power supply circuit, 2... Subscriber line, 21... Subscriber line A line, 22... Subscriber line B line, 3... Terminal, 31... DC cutoff circuit,
32...Terminal input/output section, 33...Power circuit switch section, 34...Power circuit, 4...Battery, 51, 6
DESCRIPTION OF SYMBOLS 1...Switch, 7...Internal impedance of power supply circuit, 131...Switch linked to operation of a switch etc., 170...Current loop holding circuit, 180...Reset terminal of current loop holding circuit 170, 190...Current Loop holding circuit 170
A switch, 26, that is turned on when the
1,262...Diode, 260...Delay circuit.
Claims (1)
を送受信する手段と初期設定時の電圧極性である
ノーマル状態とは反転した電圧極性であるリバー
ス状態のいずれかの状態で給電する給電回路を有
する交換機が、交換機から給電を受けた後にコー
ド信号による制御信号を送受信する端末に対して
給電する給電方式において、端末には交換機から
給電を受け端末の電源として働かせる手段とし
て、該交換機の給電回路がノーマル状態のとき
は、備え付けの第１のスイツチと第２のスイツチ
のいずれかをON状態にすると給電が受けられ、
リバース状態のときは第１のスイツチ及び第２の
スイツチのON／OFF状態のいかんにかかわらず
給電が受けられるように構成された電源回路スイ
ツチ部と、該電源回路スイツチ部を介して交換機
の給電回路から給電を受け端末の電源として働く
電源回路と、該電源回路が働くと動作し第２のス
イツチをON状態にする電流ループ保持回路と、
該電流ループ保持回路に対するリセツト信号を遅
延させて入力する遅延回路を備え、前記第１のス
イツチは端末における発呼・応答・切断等の操作
と連動させて動作するようにし、端末が空き状態
にあるときは交換機の給電回路をノーマル状態に
して置き、端末が発呼操作を行なうと前記第１の
スイツチを働かせて端末の電源回路が交換機の給
電回路から給電を受けるようにして、これに伴つ
て電流ループ保持回路が前記第２のスイツチを
ON状態にし、一方、着信側となる端末へは交換
機は制御信号を送出する前に、給電回路をリバー
ス状態にして端末の電源回路に給電して、これに
伴つて電流ループ保持回路が前記第２のスイツチ
をON状態にし、さらに、発着のいずれの場合で
も、端末が切断操作を行なうと、前記第１のスイ
ツチを復旧させるとともに、端末は切断の旨を知
らせる制御信号を交換機へ送出し、遅延回路がこ
の送出完了までの時間だけ遅延させてリセツト信
号を電流ループ保持回路に送出して前記第２のス
イツチをOFF状態にして給電を停止させること
を特徴とする給電方式。 ２ 着信側端末が応答操作を行なうと、交換機が
端末から応答信号を受けた後に給電回路をノーマ
ル状態に戻すことを特徴とする特許請求の範囲第
１項記載の給電方式。[Claims] 1. A means for transmitting and receiving a control signal using a code signal to and from a terminal, and a means for transmitting and receiving a control signal using a code signal to and from a normal state, which is a voltage polarity at the time of initial setting, and a reverse state, which is a voltage polarity that is reversed. In a power supply system in which an exchange having a power supply circuit receives power from the exchange and then supplies power to a terminal that transmits and receives a control signal based on a code signal, the terminal is supplied with power from the exchange and serves as a power source for the terminal. When the power supply circuit of the exchange is in a normal state, power can be received by turning on either the first switch or the second switch installed.
When in the reverse state, power is supplied to the exchanger through a power circuit switch section configured to receive power regardless of whether the first switch and second switch are ON/OFF, and the power supply circuit switch section. a power supply circuit that receives power from the circuit and serves as a power source for the terminal; a current loop holding circuit that operates when the power supply circuit operates and turns on a second switch;
A delay circuit is provided to delay and input a reset signal to the current loop holding circuit, and the first switch operates in conjunction with operations such as calling, answering, and disconnecting on the terminal, and when the terminal is in an idle state. In some cases, the power supply circuit of the exchange is set to the normal state, and when the terminal makes a call, the first switch is activated so that the power supply circuit of the terminal receives power from the power supply circuit of the exchange. The current loop holding circuit then controls the second switch.
ON state, and on the other hand, before sending a control signal to the receiving terminal, the exchange puts the power supply circuit in the reverse state and supplies power to the power supply circuit of the terminal. When the second switch is turned on and the terminal performs a disconnection operation in either case of departure or arrival, the first switch is restored and the terminal sends a control signal to the exchange notifying the disconnection, A power supply method characterized in that a delay circuit delays the time until the transmission is completed, and then transmits a reset signal to a current loop holding circuit to turn off the second switch and stop power supply. 2. The power supply system according to claim 1, wherein when the receiving terminal performs a response operation, the exchange returns the power supply circuit to a normal state after receiving a response signal from the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10159980A JPS5726949A (en) | 1980-07-24 | 1980-07-24 | Power feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10159980A JPS5726949A (en) | 1980-07-24 | 1980-07-24 | Power feeding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5726949A JPS5726949A (en) | 1982-02-13 |
| JPS6120183B2 true JPS6120183B2 (en) | 1986-05-21 |
Family
ID=14304846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10159980A Granted JPS5726949A (en) | 1980-07-24 | 1980-07-24 | Power feeding system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5726949A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064378B2 (en) * | 1986-10-17 | 1994-01-19 | 株式会社ニフコ | Peripheral mold for automobile window glass |
-
1980
- 1980-07-24 JP JP10159980A patent/JPS5726949A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5726949A (en) | 1982-02-13 |
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