BE406242A - - Google Patents
Info
- Publication number
- BE406242A BE406242A BE406242DA BE406242A BE 406242 A BE406242 A BE 406242A BE 406242D A BE406242D A BE 406242DA BE 406242 A BE406242 A BE 406242A
- 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)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB202982X | 1933-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE406242A true BE406242A (https=) |
Family
ID=10143647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE406242D BE406242A (https=) | 1933-11-14 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2082357A (https=) |
| BE (1) | BE406242A (https=) |
| CH (1) | CH202982A (https=) |
| DE (1) | DE677043C (https=) |
| FR (1) | FR781186A (https=) |
| GB (2) | GB430158A (https=) |
| NL (1) | NL40266C (https=) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE890062C (de) * | 1936-10-14 | 1953-09-17 | Siemens Ag | Schaltungsanordnung zur Verhinderung der elektroakustischen Rueckkopplung, insbesondere in Lautfernsprechanlagen |
| DE882420C (de) * | 1938-04-12 | 1953-07-09 | Siemens Ag | Schaltungsanordnung fuer Rueckkopplungssperren in Lautfernsprechanlagen |
| DE744088C (de) * | 1938-05-10 | 1944-01-08 | Siemens Ag | Lautfernsprechanlage mit Rueckkopplungssperre |
| DE759529C (de) * | 1940-04-26 | 1954-05-03 | Hell Rudolf Dr Ing | Rueckkopplungssperre |
| DE896058C (de) * | 1941-02-21 | 1953-11-09 | Electrical Fono Films Co As | Dynamikregelschaltung mit einstellbarem Regelgrad |
| GB561405A (en) * | 1942-11-14 | 1944-05-18 | Automatic Telephone & Elect | Improvements in or relating to telecommunication systems |
| US2696529A (en) * | 1950-09-02 | 1954-12-07 | Bell Telephone Labor Inc | Voice-operated switching system |
-
0
- NL NL40266D patent/NL40266C/xx active
- BE BE406242D patent/BE406242A/xx unknown
-
1933
- 1933-11-14 GB GB31753/33A patent/GB430158A/en not_active Expired
- 1933-11-14 GB GB13690/35A patent/GB430567A/en not_active Expired
-
1934
- 1934-11-09 US US752296A patent/US2082357A/en not_active Expired - Lifetime
- 1934-11-09 DE DER91872D patent/DE677043C/de not_active Expired
- 1934-11-13 FR FR781186D patent/FR781186A/fr not_active Expired
- 1934-11-14 CH CH202982D patent/CH202982A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE677043C (de) | 1939-06-17 |
| CH202982A (de) | 1939-02-15 |
| GB430158A (en) | 1935-06-14 |
| FR781186A (fr) | 1935-05-10 |
| NL40266C (https=) | |
| GB430567A (en) | 1935-06-14 |
| US2082357A (en) | 1937-06-01 |