FR620438A - - Google Patents
Info
- Publication number
- FR620438A FR620438A FR620438DA FR620438A FR 620438 A FR620438 A FR 620438A FR 620438D A FR620438D A FR 620438DA FR 620438 A FR620438 A FR 620438A
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1079825A GB257310A (en) | 1925-04-25 | 1925-04-25 | Improvements in automatic and semi-automatic telephone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR620438A true FR620438A (US20070167544A1-20070719-C00007.png) | 1927-04-22 |
Family
ID=9974447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR620438D Expired FR620438A (US20070167544A1-20070719-C00007.png) | 1925-04-25 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR620438A (US20070167544A1-20070719-C00007.png) |
| GB (1) | GB257310A (US20070167544A1-20070719-C00007.png) |
-
0
- FR FR620438D patent/FR620438A/fr not_active Expired
-
1925
- 1925-04-25 GB GB1079825A patent/GB257310A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB257310A (en) | 1926-08-25 |
