JPH0741234Y2 - 電話機用ドアホン接続回路 - Google Patents
電話機用ドアホン接続回路Info
- Publication number
- JPH0741234Y2 JPH0741234Y2 JP1986181349U JP18134986U JPH0741234Y2 JP H0741234 Y2 JPH0741234 Y2 JP H0741234Y2 JP 1986181349 U JP1986181349 U JP 1986181349U JP 18134986 U JP18134986 U JP 18134986U JP H0741234 Y2 JPH0741234 Y2 JP H0741234Y2
- Authority
- JP
- Japan
- Prior art keywords
- intercom
- telephone
- circuit
- connection
- doorphone
- 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
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986181349U JPH0741234Y2 (ja) | 1986-11-26 | 1986-11-26 | 電話機用ドアホン接続回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986181349U JPH0741234Y2 (ja) | 1986-11-26 | 1986-11-26 | 電話機用ドアホン接続回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6385938U JPS6385938U (US20020051482A1-20020502-M00012.png) | 1988-06-04 |
JPH0741234Y2 true JPH0741234Y2 (ja) | 1995-09-20 |
Family
ID=31126139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986181349U Expired - Lifetime JPH0741234Y2 (ja) | 1986-11-26 | 1986-11-26 | 電話機用ドアホン接続回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0741234Y2 (US20020051482A1-20020502-M00012.png) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI748681B (zh) * | 2020-10-08 | 2021-12-01 | 和碩聯合科技股份有限公司 | 門鈴控制電路 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59133736A (ja) * | 1983-01-20 | 1984-08-01 | Ricoh Co Ltd | 信号入出力装置 |
JPS61212953A (ja) * | 1985-03-18 | 1986-09-20 | Matsushita Electric Ind Co Ltd | ドアホン付電話装置 |
-
1986
- 1986-11-26 JP JP1986181349U patent/JPH0741234Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6385938U (US20020051482A1-20020502-M00012.png) | 1988-06-04 |
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