JPS643381U - - Google Patents
Info
- Publication number
- JPS643381U JPS643381U JP9752987U JP9752987U JPS643381U JP S643381 U JPS643381 U JP S643381U JP 9752987 U JP9752987 U JP 9752987U JP 9752987 U JP9752987 U JP 9752987U JP S643381 U JPS643381 U JP S643381U
- Authority
- JP
- Japan
- Prior art keywords
- monitor
- camera
- doorphone
- reception system
- visitor reception
- 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
- 230000004913 activation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Closed-Circuit Television Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9752987U JPS643381U (de) | 1987-06-25 | 1987-06-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9752987U JPS643381U (de) | 1987-06-25 | 1987-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643381U true JPS643381U (de) | 1989-01-10 |
Family
ID=31323055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9752987U Pending JPS643381U (de) | 1987-06-25 | 1987-06-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643381U (de) |
-
1987
- 1987-06-25 JP JP9752987U patent/JPS643381U/ja active Pending
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