JPH0221876U - - Google Patents
Info
- Publication number
- JPH0221876U JPH0221876U JP9387188U JP9387188U JPH0221876U JP H0221876 U JPH0221876 U JP H0221876U JP 9387188 U JP9387188 U JP 9387188U JP 9387188 U JP9387188 U JP 9387188U JP H0221876 U JPH0221876 U JP H0221876U
- Authority
- JP
- Japan
- Prior art keywords
- intercom
- unit
- entrance
- response time
- handset
- 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 4
Landscapes
- Closed-Circuit Television Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9387188U JPH0221876U (zh) | 1988-07-15 | 1988-07-15 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9387188U JPH0221876U (zh) | 1988-07-15 | 1988-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0221876U true JPH0221876U (zh) | 1990-02-14 |
Family
ID=31318348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9387188U Pending JPH0221876U (zh) | 1988-07-15 | 1988-07-15 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0221876U (zh) |
-
1988
- 1988-07-15 JP JP9387188U patent/JPH0221876U/ja active Pending
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