JPH0453351U - - Google Patents
Info
- Publication number
- JPH0453351U JPH0453351U JP9704190U JP9704190U JPH0453351U JP H0453351 U JPH0453351 U JP H0453351U JP 9704190 U JP9704190 U JP 9704190U JP 9704190 U JP9704190 U JP 9704190U JP H0453351 U JPH0453351 U JP H0453351U
- Authority
- JP
- Japan
- Prior art keywords
- base unit
- signal
- interface circuit
- door phone
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Telephone Set Structure (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9704190U JPH0453351U (el) | 1990-09-13 | 1990-09-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9704190U JPH0453351U (el) | 1990-09-13 | 1990-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0453351U true JPH0453351U (el) | 1992-05-07 |
Family
ID=31837085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9704190U Pending JPH0453351U (el) | 1990-09-13 | 1990-09-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0453351U (el) |
-
1990
- 1990-09-13 JP JP9704190U patent/JPH0453351U/ja active Pending
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