BE464851A - - Google Patents
Info
- Publication number
- BE464851A BE464851A BE464851DA BE464851A BE 464851 A BE464851 A BE 464851A BE 464851D A BE464851D A BE 464851DA BE 464851 A BE464851 A BE 464851A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US290087A US2282403A (en) | 1939-08-14 | 1939-08-14 | Transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE464851A true BE464851A (de) |
Family
ID=23114478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE464851D BE464851A (de) | 1939-08-14 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2282403A (de) |
| BE (1) | BE464851A (de) |
| FR (1) | FR930593A (de) |
| GB (1) | GB539763A (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2468552A (en) * | 1944-04-28 | 1949-04-26 | Automatic Elect Lab | Voice operated control circuit for two-way signal transmission systems |
| US2572221A (en) * | 1949-09-30 | 1951-10-23 | Robert H Voigt | Portable public address system |
| US2696529A (en) * | 1950-09-02 | 1954-12-07 | Bell Telephone Labor Inc | Voice-operated switching system |
| US3060265A (en) * | 1960-01-26 | 1962-10-23 | Itt | Conference call circuit |
| US3387096A (en) * | 1964-12-23 | 1968-06-04 | Automatic Elect Lab | Operator's transmission coupling circuit |
| CN110889466B (zh) * | 2019-12-14 | 2020-12-25 | 贵州电网有限责任公司 | 一种基于线损分类器的台区线损分析方法 |
-
0
- BE BE464851D patent/BE464851A/xx unknown
-
1939
- 1939-08-14 US US290087A patent/US2282403A/en not_active Expired - Lifetime
-
1940
- 1940-07-31 GB GB12371/40A patent/GB539763A/en not_active Expired
-
1946
- 1946-07-12 FR FR930593D patent/FR930593A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2282403A (en) | 1942-05-12 |
| GB539763A (en) | 1941-09-23 |
| FR930593A (fr) | 1948-01-29 |