BE476750A - - Google Patents
Info
- Publication number
- BE476750A BE476750A BE476750DA BE476750A BE 476750 A BE476750 A BE 476750A BE 476750D A BE476750D A BE 476750DA BE 476750 A BE476750 A BE 476750A
- 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)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1570939A GB529788A (en) | 1939-05-26 | 1939-05-26 | Voice controlled switching devices for telephone circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE476750A true BE476750A (ja�@�@) |
Family
ID=10064063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE476750D BE476750A (ja�@�@) | 1939-05-26 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE476750A (ja�@�@) |
| FR (1) | FR991751A (ja�@�@) |
| GB (1) | GB529788A (ja�@�@) |
-
0
- BE BE476750D patent/BE476750A/xx unknown
-
1939
- 1939-05-26 GB GB1570939A patent/GB529788A/en not_active Expired
-
1947
- 1947-02-28 FR FR991751D patent/FR991751A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB529788A (en) | 1940-11-28 |
| FR991751A (fr) | 1951-10-10 |