JPH02138983U - - Google Patents
Info
- Publication number
- JPH02138983U JPH02138983U JP4838689U JP4838689U JPH02138983U JP H02138983 U JPH02138983 U JP H02138983U JP 4838689 U JP4838689 U JP 4838689U JP 4838689 U JP4838689 U JP 4838689U JP H02138983 U JPH02138983 U JP H02138983U
- Authority
- JP
- Japan
- Prior art keywords
- unit
- recording
- playback
- intercom
- video
- 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
- 230000005236 sound signal Effects 0.000 claims 9
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Closed-Circuit Television Systems (AREA)
- Audible And Visible Signals (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4838689U JPH02138983U (it) | 1989-04-25 | 1989-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4838689U JPH02138983U (it) | 1989-04-25 | 1989-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02138983U true JPH02138983U (it) | 1990-11-20 |
Family
ID=31565145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4838689U Pending JPH02138983U (it) | 1989-04-25 | 1989-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02138983U (it) |
-
1989
- 1989-04-25 JP JP4838689U patent/JPH02138983U/ja active Pending
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