JPH0227466Y2 - - Google Patents
Info
- Publication number
- JPH0227466Y2 JPH0227466Y2 JP1983165139U JP16513983U JPH0227466Y2 JP H0227466 Y2 JPH0227466 Y2 JP H0227466Y2 JP 1983165139 U JP1983165139 U JP 1983165139U JP 16513983 U JP16513983 U JP 16513983U JP H0227466 Y2 JPH0227466 Y2 JP H0227466Y2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- conductors
- outer periphery
- synthetic resin
- telephone
- 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
- 239000004020 conductor Substances 0.000 claims description 63
- 239000012212 insulator Substances 0.000 claims description 10
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920013716 polyethylene resin Polymers 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims 8
- 239000000057 synthetic resin Substances 0.000 claims 8
- 230000000694 effects Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
Landscapes
- Communication Cables (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は電話機の送受話器および電話機台を接
続する電話器用接続コードに関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a telephone connection cord for connecting a telephone handset and a telephone stand.
第１図ないし第４図を参照して従来例を説明す
る。第１図は電話機の概略を示す斜視図であり、
図中符号１は電話機台を示し、また符号２は送受
話器を示す。これら電話機台１および送受話器２
は、接続コード３により接続されている。この接
続コード３は第２図に示すように螺旋状をなすコ
ード４と、このコード４の両端に接続された１対
の接続プラグ５Ａ，５Ｂとからなり、これら接続
プラグ５Ａ，５Ｂを前記電話機台１および送受話
器２に差込むことにより電話機台１および送受話
器２を接続している。
A conventional example will be explained with reference to FIGS. 1 to 4. FIG. 1 is a perspective view schematically showing a telephone;
In the figure, reference numeral 1 indicates a telephone stand, and reference numeral 2 indicates a handset. These telephone bases 1 and handsets 2
are connected by a connection cord 3. As shown in FIG. 2, this connection cord 3 consists of a spiral cord 4 and a pair of connection plugs 5A, 5B connected to both ends of this cord 4. The telephone base 1 and the handset 2 are connected by being inserted into the base 1 and the handset 2.
次に上記コード４の構成について説明する。第
３図はコード４の横断面図であり、図中符号６は
外被を示す。この外被６内には送話側導体７Ａ，
７Ｂおよび受話側導体８Ａ，８Ｂが同一平面上に
配置されている。これら導体７Ａ，７Ｂ，８Ａ，
８Ｂの外周にはそれぞれ絶縁体９が設けられてい
る。また第４図に円形コードの例を示す。 Next, the configuration of code 4 will be explained. FIG. 3 is a cross-sectional view of the cord 4, and reference numeral 6 in the figure indicates the outer jacket. Inside this jacket 6, a transmitting side conductor 7A,
7B and receiving side conductors 8A, 8B are arranged on the same plane. These conductors 7A, 7B, 8A,
An insulator 9 is provided on the outer periphery of each element 8B. Further, FIG. 4 shows an example of a circular code.
上記構成において送話側導体７Ａ，７Ｂおよび
受話側導体８Ａ，８Ｂ共にインピーダンスが低く
周囲雑音あるいは送話側および受話側間の漏話の
問題はなかつたが、例えばインピーダンスの高い
信号を電話機台１および送受話器２間で伝送する
場合は、周囲雑音例えば種々の電気製品等から出
る電磁波によりノイズが入り込むあるいはインピ
ーダンスの高い線に線間の漏話が発生する等の問
題が生じ、特に送受話器２としてエレクトレート
コンデンサマイクあるいはセラミツク圧電型のも
のを使用した場合に発生しやすい。
In the above configuration, both the transmitting side conductors 7A, 7B and the receiving side conductors 8A, 8B have low impedance, so there was no problem with ambient noise or crosstalk between the transmitting side and the receiving side. When transmitting data between the handset 2, there are problems such as interference from surrounding noise, such as electromagnetic waves emitted from various electrical appliances, or crosstalk between lines with high impedance. This problem tends to occur when using rate condenser microphones or ceramic piezoelectric type microphones.
本考案の目的とするところは、周囲雑音に対す
る遮蔽効果の向上および送話側および受話側間の
漏話防止を図ることが可能な電話機用接続コード
を提供することにある。
An object of the present invention is to provide a connection cord for a telephone that can improve the shielding effect against ambient noise and prevent crosstalk between the transmitting side and the receiving side.
（考案の概要〕
すなわち本考案による電話機用接続コードは送
話側導体および受話側導体を外被内に収容したコ
ードと、このコードの両端にそれぞれ接続された
接続プラグとからなり、それぞれの接続プラグを
介して送受話器と電話機台とを接続する電話機用
接続コードにおいて、上記送話側導体外周および
受話側導体外周にシールド層を設けかつコードの
断面構造において点対称とした構成である。(Summary of the invention) In other words, the telephone connection cord according to the invention consists of a cord in which a transmitter conductor and a receiver conductor are housed in an outer jacket, and connection plugs connected to both ends of the cord. In a telephone connection cord that connects a handset and a telephone stand via a plug, a shield layer is provided on the outer periphery of the transmitter-side conductor and the receiver-side conductor, and the cross-sectional structure of the cord is point symmetrical.
以下第５図を参照して本考案の第１の実施例を
説明する。第５図は本実施例によるコード１０４
の横断面図であり、図中符号１０６は例えば塩化
ビニール樹脂製の外被を示す。この外被１０６内
には送話側導体１０７Ａ，１０７Ｂおよび受話側
導体１０８Ａ，１０８Ｂが同一平面上に配置され
ている。これら送話側導体１０７Ａ，１０７Ｂお
よび受話側導体１０８Ａ，１０８Ｂは例えば電気
用硬銅からなつている。上記送話側導体１０７Ａ
および受話側導体１０８Ａ外周には例えばポリエ
ステル樹脂製の絶縁体１０９が設けられており、
一方上記送話側導体１０７Ｂおよび受話側導体１
０８Ｂ外周には導電性を有するポリエチレン樹脂
製の導電体１１０が設けられている。そして上記
送話側導体１０７Ａの絶縁体１０９外周および受
話側導体１０８Ａの絶縁体１０９の外周にはシー
ルド層１１１が設けられている。このシールド層
１１１は導電性を有する塩化ビニール樹脂から構
成されている。すなわち送話側導体１０７Ａおよ
び受話側導体１０８Ａの絶縁体１０９外周にシー
ルド層１１１を設けることにより、周囲雑音に対
する遮蔽効果の向上および送話側および受話側間
の漏話を防止する構成である。また第５図からも
明らかなように本実施例のコード１０４はその断
面構造において対称に構成されている。このよう
な構成とすることにより方向性をなくし、コード
１０４のどちらを送受話器２あるいは電話機台１
に接続しても健全に機能できるようになつてい
る。なお前記送話側導体１０７Ｂおよび受話側導
体１０８Ｂの外周に導電体１１０を設けたのは、
この導電体１１０を介して前記シールド層１１１
と上記送話側導体１０７Ｂおよび受話側導体１０
８Ｂとをそれぞれ接続し、さらに図示しない接続
プラグの端子に電気的に接続させる為であり、こ
れによつて上述した周囲雑音に対する遮蔽および
漏話防止をより効果的なものとする構成である。
A first embodiment of the present invention will be described below with reference to FIG. FIG. 5 shows the code 104 according to this embodiment.
106 is a cross-sectional view of the present invention, and reference numeral 106 in the figure indicates an outer cover made of, for example, vinyl chloride resin. Inside this jacket 106, transmitting side conductors 107A, 107B and receiving side conductors 108A, 108B are arranged on the same plane. These transmitting side conductors 107A, 107B and receiving side conductors 108A, 108B are made of electrical hard copper, for example. Said transmitting side conductor 107A
An insulator 109 made of polyester resin, for example, is provided on the outer periphery of the receiver conductor 108A.
On the other hand, the transmitting side conductor 107B and the receiving side conductor 1
A conductor 110 made of polyethylene resin and having conductivity is provided on the outer periphery of 08B. A shield layer 111 is provided on the outer periphery of the insulator 109 of the transmitter conductor 107A and the outer periphery of the insulator 109 of the receiver conductor 108A. This shield layer 111 is made of electrically conductive vinyl chloride resin. That is, by providing a shield layer 111 on the outer periphery of the insulator 109 of the transmitting side conductor 107A and the receiving side conductor 108A, the shielding effect against ambient noise is improved and crosstalk between the transmitting side and the receiving side is prevented. Further, as is clear from FIG. 5, the cord 104 of this embodiment has a symmetrical cross-sectional structure. With such a configuration, directionality is eliminated, and whether the cord 104 is connected to the handset 2 or the telephone base 1
It has become possible to function properly even when connected to. The conductor 110 was provided on the outer periphery of the transmitting conductor 107B and the receiving conductor 108B because
The shield layer 111
and the above-mentioned transmitting side conductor 107B and receiving side conductor 10
8B, and electrically connected to terminals of a connection plug (not shown), thereby making the above-mentioned shielding against ambient noise and crosstalk prevention more effective.
以上の構成によるとシールド層１１１を設けた
ことにより周囲雑音に対する遮蔽効果の向上およ
び送話側および受話側間の漏話を効果的に防止す
ることができる。またコード１０４には方向性が
ないのでコード１０４のどちらを送受話器２ある
いは電話機台１に接続しても健全に機能すること
ができるのできわめて使用し易い。 According to the above configuration, by providing the shield layer 111, it is possible to improve the shielding effect against ambient noise and effectively prevent crosstalk between the transmitting side and the receiving side. Furthermore, since the cord 104 has no directionality, it can function properly no matter which end of the cord 104 is connected to the handset 2 or the telephone stand 1, making it extremely easy to use.
次に第６図を参照して第２の実施例を説明す
る。この第２の実施例は送話側導体１０７Ａの外
周に絶縁体１０９を設け、送話側導体１０７Ｂの
外周に導電体１１０を設け、これらを一括してシ
ールド層１１２で覆い、また受話側も同様に受話
側導体１０８Ａの外周に絶縁体１０９を設け、受
話側導体１０８Ｂの外周に導電体１１０を設けこ
れらを一括してシールド層１１２で覆つた構成で
ある。 Next, a second embodiment will be described with reference to FIG. In this second embodiment, an insulator 109 is provided on the outer periphery of the transmitting side conductor 107A, a conductor 110 is provided on the outer periphery of the transmitting side conductor 107B, and these are collectively covered with a shield layer 112, and the receiving side is also Similarly, an insulator 109 is provided around the outer periphery of the receiver conductor 108A, a conductor 110 is provided around the outer periphery of the receiver conductor 108B, and these are collectively covered with a shield layer 112.
したがつてこの場合にも前記第１の実施例と同
じく周囲雑音に対する遮蔽効果の向上、送話側お
よび受話側間の漏話防止を図ることができ、また
コード１０４に方向性がないのできわめて使用し
易い。 Therefore, in this case, as in the first embodiment, it is possible to improve the shielding effect against ambient noise and prevent crosstalk between the transmitting side and the receiving side, and since the cord 104 has no directionality, it is very easy to use. Easy to do.
次に第７図を参照して第３の実施例を説明す
る。この第３の実施例は前記第２の実施例におけ
る送話側導体１０７Ａ，１０７Ｂと受話側導体１
０８Ａ，１０８Ｂとを２段重ねとし外被１０６の
断面形状を円形とした構成である。したがつて周
囲雑音に対する遮蔽効果の向上、送話側および受
話側間の漏話防止およびコード１０４の方向性の
排除等前記第１および第２の実施例と同様の効果
を奏することができる。 Next, a third embodiment will be described with reference to FIG. This third embodiment is based on the transmitting side conductors 107A, 107B and the receiving side conductor 1 in the second embodiment.
08A and 108B are stacked in two stages, and the outer cover 106 has a circular cross-sectional shape. Therefore, the same effects as in the first and second embodiments can be achieved, such as improving the shielding effect against ambient noise, preventing crosstalk between the transmitting side and the receiving side, and eliminating the directionality of the cord 104.
ここで上記第１ないし第３実施例における周囲
雑音遮蔽効果および漏話防止効果についての測定
結果をそれぞれ第８図および第９図に示す。第８
図は横軸に周波数（：Hz）をとり縦軸にシール
ド効果（Ａ：dB）をとり各周波数におけるシー
ルド効果を示す図であり、図中線図ａは個別にシ
ールド層を設けた場合、線図ｂは一括してシール
ド層を設けた場合、線図ｃはシールド層がない場
合をそれぞれ示している。またシールド効果Ａは
次の式より算出する。 Here, the measurement results of the ambient noise shielding effect and the crosstalk prevention effect in the first to third embodiments are shown in FIGS. 8 and 9, respectively. 8th
The figure shows the shielding effect at each frequency, with the horizontal axis representing the frequency (Hz) and the vertical axis representing the shielding effect (A: dB). Line a in the figure represents the case where individual shield layers are provided. Diagram b shows the case where a shield layer is provided all at once, and diagram c shows the case where there is no shield layer. Further, the shielding effect A is calculated using the following formula.
Ａ＝−20logE0／En（dB） …（）
ただしEnはシールド層と外被外周に任意に設
けた銅パイプとの間に印加された印加電圧を示
し、E0はそのときシールド層と導体との間に誘
起された誘起電圧を示す。この第８図から明らか
なようにシールド層を設けない場合に比べてシー
ルド層を設けた場合はシールド効果が高く、周囲
雑音を効果的に遮蔽していることがわかる。また
一括してシールド層を設けた場合より個別にシー
ルド層を設けた方がより効果的である。また第９
図は横軸に周波数（：Hz）をとり、縦軸にシー
ルド効果（A′：dB）をとり、各周波数における
シールド効果を示す図であり、図中線図a′は個別
にシールド層を設けた場合、線図b′は一括してシ
ールド層を設けた場合、線図c′はシールド層を設
けない場合をそれぞれ示す。またシールド効果
A′は次の式より算出する。 A = -20logE 0 /En (dB) ...() However, En indicates the applied voltage between the shield layer and the copper pipe arbitrarily provided on the outer periphery of the jacket, and E 0 indicates the voltage applied between the shield layer and the conductor at that time. This shows the induced voltage between . As is clear from FIG. 8, the shielding effect is higher when the shield layer is provided than when no shield layer is provided, and it can be seen that ambient noise is effectively shielded. Further, it is more effective to provide shield layers individually than to provide shield layers all at once. Also the 9th
The figure shows the shielding effect at each frequency, with frequency (: Hz) plotted on the horizontal axis and shielding effect (A': dB) plotted on the vertical axis. When provided, line b' shows the case where the shield layer is provided all at once, and line c' shows the case where the shield layer is not provided. Also shield effect
A′ is calculated using the following formula.
A′＝−20logE0′／En′（dB） …（）
ただしEn′は送話側および受話側導体の内一方
の導体およびシールド層間に印加された印加電圧
を示し、E0′はそのとき他方の導体およびシール
ド層間に誘起される誘起電圧を示す。この第９図
から明らかなようにシールド層を設けない場合に
比べてシールド層を設けた場合はシールド効果が
高く、送話側および受話側間における漏話が効果
的に防止されていることがわかる。また一括して
シールド層を設けた場合より個別にシールド層を
設けた方がより効果的である。 A′=−20logE 0 ′/En′(dB) …() where En′ is the applied voltage applied between one of the transmitting and receiving conductors and the shield layer, and E 0 ′ is the voltage applied at that time. It shows the induced voltage between the other conductor and the shield layer. As is clear from Fig. 9, the shielding effect is higher when a shield layer is provided than when no shield layer is provided, and crosstalk between the transmitting side and the receiving side is effectively prevented. . Further, it is more effective to provide shield layers individually than to provide shield layers all at once.
なお導体の数およびその配置は前記第１ないし
第３実施例に限定されるものではなく方向性を有
しない状態で種々の構成が考えられる。 Note that the number of conductors and their arrangement are not limited to those in the first to third embodiments, and various configurations without directionality are possible.
以上詳述したように本考案による電話機用接続
コードは、送話側導体および受話側導体を外被内
に収容したコードと、このコードの両端にそれぞ
れ接続された接続プラグとからなり、それぞれの
接続プラグを介して送受話器と電話機台とを接続
する電話機用接続コードにおいて、上記送話側導
体外周および受話側導体外周にシールド層を設け
かつコードの断面構造において点対称とした構成
である。
As detailed above, the telephone connection cord according to the present invention consists of a cord in which the transmitter conductor and the receiver conductor are housed in the outer jacket, and connection plugs connected to both ends of the cord. In a telephone connection cord that connects a handset and a telephone stand via a connection plug, a shield layer is provided on the outer periphery of the transmitter-side conductor and the receiver-side conductor, and the cross-sectional structure of the cord is point symmetrical.
したがつて周囲雑音に対する遮蔽効果の向上、
送話側および受話側間の漏話防止を図ることがで
き電話機としての信頼性を大巾に向上させること
ができるとともにコードの方向性をなくすことが
できるので、コードのどちらを送受話器あるいは
電話機台に接続しても健全に機能しかつシールド
効果も得られきわめて使用し易くなる等その効果
は大である。 Therefore, the shielding effect against ambient noise is improved,
It is possible to prevent crosstalk between the transmitting side and the receiving side, greatly improving the reliability of the telephone, and also eliminating the directionality of the cord. Its effects are great, such as it functions soundly even when connected to a cable, provides a shielding effect, and is extremely easy to use.
第１図ないし第４図は従来例を示す図で、第１
図は電話機の斜視図、第２図は接続コードおよび
送受話器の斜視図、第３図および第４図はコード
の横断面図、第５図は本考案の第１の実施例を示
すコードの横断面図、第６図は第２の実施例を示
すコードの横断面図、第７図は第３の実施例を示
すコードの横断面図、第８図は周囲雑音遮蔽効果
を示す図、第９図は漏話防止効果を示す図であ
る。
１……電話機台、２……送受話器、５Ａ，５Ｂ
……接続プラグ、１０４……コード、１０６……
外被、１０７Ａ，１０７Ｂ……送話側導体、１０
８Ａ，１０８Ｂ……受話側導体、１１１……シー
ルド層。
Figures 1 to 4 are diagrams showing conventional examples.
2 is a perspective view of the connection cord and handset, FIGS. 3 and 4 are cross-sectional views of the cord, and FIG. 5 is a perspective view of the cord showing the first embodiment of the present invention. 6 is a cross-sectional view of the cord showing the second embodiment; FIG. 7 is a cross-sectional view of the cord showing the third embodiment; FIG. 8 is a diagram showing the ambient noise shielding effect; FIG. 9 is a diagram showing the crosstalk prevention effect. 1... Telephone stand, 2... Handset, 5A, 5B
... Connection plug, 104 ... Cord, 106 ...
Outer cover, 107A, 107B...Sending side conductor, 10
8A, 108B... Receiving side conductor, 111... Shield layer.
Claims (1)
対の導体を収容し、各導体の各端部に、それぞ
れ、接続プラグが接続され、各接続プラグを介
して送受話器と電話機台とを接続するようにな
つている電話機用接続コードにおいて、送話側
及び受話側の各１対の導体１０７Ａ，１０７
Ｂ，１０８Ａ，１０８の内の各１本の導体１０
７Ａ，１０８Ａの外周に、それぞれ、合成樹脂
製の絶縁体１０９を設けると共に他の各１本の
導体１０７Ｂ，１０８Ｂの外周に、それぞれ、
導電性を有する合成樹脂製の導電体１１０を設
け、少なくとも、送話側及び受話側の外周に合
成樹脂製の絶縁体１０９を設けられた各１本の
導体１０７Ａ，１０８Ａの絶縁体１０９の外周
に、導電性を有する合成樹脂製のシールド層１
１１を、それぞれが、外周に導電性を有する合
成樹脂製の導電体１１０を設けられた他の各１
本の導体１０７Ｂ，１０８Ｂの導電体１１０と
接触するように設けて成る電話機用接続コー
ド。 ２ シールド層１１１が、送話側及び受話側の外
周に導電性を有する導電体１１０を設けられた
他の各１本の導体１０７Ｂ，１０８Ｂの導電体
１１０の外周をも被覆するように配置された実
用新案登録請求の範囲第１項記載の電話機用接
続コード。 ３ 導電性を有する合成樹脂製の導電体１１０
が、導電性を有するポリエチレン樹脂から成立
つている実用新案登録請求の範囲第１又は２項
記載の電話機用接続コード。 ４ 導電性を有する合成樹脂製のシールド層１１
１が、導電性を有する塩化ビニール樹脂から成
立つている実用新案登録請求の範囲第１，２又
は３項記載の電話機用接続コード。 ５ 合成樹脂製の絶縁体１０９が、塩化ビニール
樹脂から成立つている実用新案登録請求の範囲
第１〜４項のいずれかに記載の電話機用接続コ
ード。 ６ 送話側の１対の導体１０７Ａ，１０７Ｂ及び
受話側の１対の導体１０８Ａ，１０８Ｂが、外
被１０６の横断面の中心に対して点対称に配置
されている実用新案登録請求の範囲第１〜５項
のいずれかに記載の電話機用接続コード。[Claims for Utility Model Registration] 1. A pair of conductors on the transmitting side and a pair of conductors on the receiving side within the outer jacket.
A connecting cord for a telephone that accommodates a pair of conductors, has a connecting plug connected to each end of each conductor, and connects a handset and a telephone stand via each connecting plug. One pair of conductors 107A, 107 on the speaking side and the receiving side
B, 108A, 108 each one conductor 10
An insulator 109 made of synthetic resin is provided on the outer periphery of each conductor 7A, 108A, and on the outer periphery of each other conductor 107B, 108B, respectively.
A conductor 110 made of a synthetic resin having electrical conductivity is provided, and at least an insulator 109 made of a synthetic resin is provided on the outer periphery of the transmitting side and the receiving side. , a shield layer 1 made of conductive synthetic resin
11, and each other 1 is provided with a synthetic resin conductor 110 having conductivity on its outer periphery.
A telephone connection cord provided so as to be in contact with the conductor 110 of the book conductors 107B and 108B. 2. The shield layer 111 is arranged so as to also cover the outer periphery of the conductor 110 of each of the other conductors 107B and 108B provided with the conductor 110 having conductivity on the outer periphery of the transmitting side and the receiving side. A connection cord for a telephone according to claim 1 of the utility model registration claim. 3 Conductor 110 made of synthetic resin and having conductivity
The telephone connection cord according to claim 1 or 2, wherein the cord is made of a polyethylene resin having electrical conductivity. 4 Conductive synthetic resin shield layer 11
A telephone connection cord according to claim 1, 2 or 3, wherein 1 is made of conductive vinyl chloride resin. 5. The telephone connection cord according to any one of claims 1 to 4, wherein the synthetic resin insulator 109 is made of vinyl chloride resin. 6 Utility model registration claim No. 1 in which a pair of conductors 107A, 107B on the transmitting side and a pair of conductors 108A, 108B on the receiving side are arranged point-symmetrically with respect to the center of the cross section of the outer sheath 106. The telephone connection cord according to any one of items 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16513983U JPS6073117U (en) | 1983-10-25 | 1983-10-25 | Connection cord for telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16513983U JPS6073117U (en) | 1983-10-25 | 1983-10-25 | Connection cord for telephone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6073117U JPS6073117U (en) | 1985-05-23 |
| JPH0227466Y2 true JPH0227466Y2 (en) | 1990-07-25 |
Family
ID=30361866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16513983U Granted JPS6073117U (en) | 1983-10-25 | 1983-10-25 | Connection cord for telephone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6073117U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52154699U (en) * | 1976-05-19 | 1977-11-24 |
-
1983
- 1983-10-25 JP JP16513983U patent/JPS6073117U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6073117U (en) | 1985-05-23 |
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