JPH02113462U - - Google Patents
Info
- Publication number
- JPH02113462U JPH02113462U JP2291489U JP2291489U JPH02113462U JP H02113462 U JPH02113462 U JP H02113462U JP 2291489 U JP2291489 U JP 2291489U JP 2291489 U JP2291489 U JP 2291489U JP H02113462 U JPH02113462 U JP H02113462U
- Authority
- JP
- Japan
- Prior art keywords
- room
- slave unit
- collective entrance
- base unit
- voice signal
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2291489U JPH02113462U (fi) | 1989-02-28 | 1989-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2291489U JPH02113462U (fi) | 1989-02-28 | 1989-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113462U true JPH02113462U (fi) | 1990-09-11 |
Family
ID=31241455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2291489U Pending JPH02113462U (fi) | 1989-02-28 | 1989-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113462U (fi) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59175265A (ja) * | 1983-03-25 | 1984-10-04 | Citizen Watch Co Ltd | 録音機能付インタ−ホン |
| JPS6260348A (ja) * | 1985-09-10 | 1987-03-17 | Sharp Corp | ドアホン装置 |
| JPS63238758A (ja) * | 1987-03-26 | 1988-10-04 | Matsushita Electric Works Ltd | 集合住宅用監視通話システム |
-
1989
- 1989-02-28 JP JP2291489U patent/JPH02113462U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59175265A (ja) * | 1983-03-25 | 1984-10-04 | Citizen Watch Co Ltd | 録音機能付インタ−ホン |
| JPS6260348A (ja) * | 1985-09-10 | 1987-03-17 | Sharp Corp | ドアホン装置 |
| JPS63238758A (ja) * | 1987-03-26 | 1988-10-04 | Matsushita Electric Works Ltd | 集合住宅用監視通話システム |