BE439378A - - Google Patents
Info
- Publication number
- BE439378A BE439378A BE439378DA BE439378A BE 439378 A BE439378 A BE 439378A BE 439378D A BE439378D A BE 439378DA BE 439378 A BE439378 A BE 439378A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
- H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB952041A GB548473A (en) | 1941-07-26 | 1941-07-26 | Improvements in 4-wire terminating arrangements in electrical communication systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE439378A true BE439378A (https=) | 1940-10-31 |
Family
ID=9873551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE439378D BE439378A (https=) | 1941-07-26 | 1940-09-26 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE439378A (https=) |
| FR (1) | FR887180A (https=) |
| GB (1) | GB548473A (https=) |
-
1940
- 1940-09-26 BE BE439378D patent/BE439378A/xx unknown
-
1941
- 1941-07-26 GB GB952041A patent/GB548473A/en not_active Expired
- 1941-12-11 FR FR887180D patent/FR887180A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB548473A (en) | 1942-10-12 |
| FR887180A (fr) | 1943-11-05 |