BE466555A - - Google Patents
Info
- Publication number
- BE466555A BE466555A BE466555DA BE466555A BE 466555 A BE466555 A BE 466555A BE 466555D A BE466555D A BE 466555DA BE 466555 A BE466555 A BE 466555A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US507067A US2398854A (en) | 1943-10-21 | 1943-10-21 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE466555A true BE466555A (en) |
Family
ID=24017122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE466555D BE466555A (en) | 1943-10-21 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2398854A (en) |
| BE (1) | BE466555A (en) |
| FR (1) | FR938261A (en) |
| GB (1) | GB581284A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2564084A (en) * | 1946-11-02 | 1951-08-14 | Automatic Elect Lab | Telephone system having repeater insertion on long distance lines |
| US2580709A (en) * | 1947-11-14 | 1952-01-01 | Automatic Elect Lab | Toll switching telephone system having automatic amplifier insertion and gain setting |
| US2682577A (en) * | 1951-11-05 | 1954-06-29 | Itt | Discriminating circuits for dualpurpose trunks |
| US2781418A (en) * | 1953-01-30 | 1957-02-12 | Gen Dynamics Corp | Automatic telephone system |
| US3689704A (en) * | 1969-12-17 | 1972-09-05 | Itt | Constant current output controlled repeater insertion |
-
0
- BE BE466555D patent/BE466555A/xx unknown
-
1943
- 1943-10-21 US US507067A patent/US2398854A/en not_active Expired - Lifetime
-
1944
- 1944-08-22 GB GB15985/44A patent/GB581284A/en not_active Expired
-
1946
- 1946-07-25 FR FR938261D patent/FR938261A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB581284A (en) | 1946-10-08 |
| FR938261A (en) | 1948-09-09 |
| US2398854A (en) | 1946-04-23 |