NL37480C - - Google Patents
Info
- Publication number
- NL37480C NL37480C NL37480DA NL37480C NL 37480 C NL37480 C NL 37480C NL 37480D A NL37480D A NL 37480DA NL 37480 C NL37480 C NL 37480C
- Authority
- NL
- Netherlands
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)
- Near-Field Transmission Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Noise Elimination (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24631/32A GB408300A (en) | 1932-09-03 | 1932-09-03 | Improvements in or relating to two-way telephone and like electrical systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL37480C true NL37480C (xx) |
Family
ID=10214744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL37480D NL37480C (xx) | 1932-09-03 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1992833A (xx) |
| DE (1) | DE623827C (xx) |
| FR (1) | FR761604A (xx) |
| GB (2) | GB408300A (xx) |
| NL (1) | NL37480C (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2511948A (en) * | 1950-06-20 | Hybrid circuit | ||
| NL80719C (xx) * | 1949-10-11 | |||
| DE1062748B (de) * | 1956-02-29 | 1959-08-06 | Siemens Ag | Einrichtung zur Vermeidung unerwuenschter Rueckkopplungen bei UEbertragungssystemen |
-
0
- NL NL37480D patent/NL37480C/xx active
- DE DENDAT623827D patent/DE623827C/de active Active
-
1932
- 1932-09-03 GB GB24631/32A patent/GB408300A/en not_active Expired
- 1932-09-03 GB GB6796/34A patent/GB408329A/en not_active Expired
-
1933
- 1933-09-02 FR FR761604D patent/FR761604A/fr not_active Expired
- 1933-09-21 US US690320A patent/US1992833A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1992833A (en) | 1935-02-26 |
| GB408300A (en) | 1934-04-03 |
| DE623827C (xx) | |
| GB408329A (en) | 1934-04-03 |
| FR761604A (fr) | 1934-03-23 |