BE373794A - - Google Patents
Info
- Publication number
- BE373794A BE373794A BE373794DA BE373794A BE 373794 A BE373794 A BE 373794A BE 373794D A BE373794D A BE 373794DA BE 373794 A BE373794 A BE 373794A
- 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)
- Interface Circuits In Exchanges (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US390540A US1826196A (en) | 1929-09-05 | 1929-09-05 | Echo suppressor |
| US483784A US1840015A (en) | 1929-09-05 | 1930-09-23 | Transmission control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE373794A true BE373794A (xx) | 1930-10-31 |
Family
ID=42041884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE373794D BE373794A (xx) | 1929-09-05 | 1930-09-27 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US1826196A (xx) |
| BE (1) | BE373794A (xx) |
| CH (1) | CH150480A (xx) |
| DE (3) | DE595881C (xx) |
| FR (1) | FR716100A (xx) |
| GB (2) | GB351070A (xx) |
-
1929
- 1929-09-05 US US390540A patent/US1826196A/en not_active Expired - Lifetime
-
1930
- 1930-03-22 GB GB9275/30A patent/GB351070A/en not_active Expired
- 1930-05-14 GB GB14813/30A patent/GB354790A/en not_active Expired
- 1930-05-24 CH CH150480D patent/CH150480A/de unknown
- 1930-08-01 DE DE1930I0040330 patent/DE595881C/de not_active Expired
- 1930-08-28 FR FR716100D patent/FR716100A/fr not_active Expired
- 1930-09-23 US US483784A patent/US1840015A/en not_active Expired - Lifetime
- 1930-09-27 BE BE373794D patent/BE373794A/xx unknown
-
1931
- 1931-03-21 DE DEI41006D patent/DE596742C/de not_active Expired
- 1931-09-23 DE DEI42649D patent/DE596743C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB351070A (en) | 1931-06-22 |
| US1840015A (en) | 1932-01-05 |
| FR716100A (fr) | 1931-12-12 |
| DE596742C (de) | 1934-05-11 |
| GB354790A (en) | 1931-08-14 |
| DE595881C (de) | 1934-04-23 |
| DE596743C (de) | 1934-05-11 |
| CH150480A (de) | 1931-10-31 |
| US1826196A (en) | 1931-10-06 |