JPS4897404A - - Google Patents
Info
- Publication number
- JPS4897404A JPS4897404A JP47030042A JP3004272A JPS4897404A JP S4897404 A JPS4897404 A JP S4897404A JP 47030042 A JP47030042 A JP 47030042A JP 3004272 A JP3004272 A JP 3004272A JP S4897404 A JPS4897404 A JP S4897404A
- Authority
- JP
- Japan
- 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.)
- Granted
Links
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3004272A JPS539485B2 (https=) | 1972-03-25 | 1972-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3004272A JPS539485B2 (https=) | 1972-03-25 | 1972-03-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4897404A true JPS4897404A (https=) | 1973-12-12 |
| JPS539485B2 JPS539485B2 (https=) | 1978-04-06 |
Family
ID=12292751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3004272A Expired JPS539485B2 (https=) | 1972-03-25 | 1972-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS539485B2 (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58204665A (ja) * | 1982-05-24 | 1983-11-29 | Secom Co Ltd | 回線断線検出警報装置を有する異常通報装置 |
-
1972
- 1972-03-25 JP JP3004272A patent/JPS539485B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58204665A (ja) * | 1982-05-24 | 1983-11-29 | Secom Co Ltd | 回線断線検出警報装置を有する異常通報装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS539485B2 (https=) | 1978-04-06 |