BE464871A - - Google Patents
Info
- Publication number
- BE464871A BE464871A BE464871DA BE464871A BE 464871 A BE464871 A BE 464871A BE 464871D A BE464871D A BE 464871DA BE 464871 A BE464871 A BE 464871A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB10748/40A GB542039A (en) | 1940-06-22 | 1940-06-22 | Improvements in or relating to telephone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE464871A true BE464871A (en:Method) |
Family
ID=9973553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE464871D BE464871A (en:Method) | 1940-06-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2307855A (en:Method) |
| BE (1) | BE464871A (en:Method) |
| FR (1) | FR932189A (en:Method) |
| GB (1) | GB542039A (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2904633A (en) * | 1954-08-06 | 1959-09-15 | Gen Telephone Lab Inc | Party line paystation |
| US2870263A (en) * | 1955-02-25 | 1959-01-20 | Gen Dynamics Corp | Radio or carrier terminal dial selector |
| US2971085A (en) * | 1956-06-22 | 1961-02-07 | Automatic Elect Lab | Selective signaling radiotelephone system |
| US3016426A (en) * | 1957-10-04 | 1962-01-09 | Bell Telephone Labor Inc | Multiparty selective signaling system |
-
0
- BE BE464871D patent/BE464871A/xx unknown
-
1940
- 1940-06-22 GB GB10748/40A patent/GB542039A/en not_active Expired
-
1941
- 1941-05-03 US US391643A patent/US2307855A/en not_active Expired - Lifetime
-
1946
- 1946-08-12 FR FR932189D patent/FR932189A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR932189A (fr) | 1948-03-15 |
| US2307855A (en) | 1943-01-12 |
| GB542039A (en) | 1941-12-23 |