NL50600C - - Google Patents
Info
- Publication number
- NL50600C NL50600C NL82857A NL82857A NL50600C NL 50600 C NL50600 C NL 50600C NL 82857 A NL82857 A NL 82857A NL 82857 A NL82857 A NL 82857A NL 50600 C NL50600 C NL 50600C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/78—Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Devices For Supply Of Signal Current (AREA)
- Prepayment Telephone Systems (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL85522D DE708943C (de) | 1934-03-14 | 1934-03-14 | Verfahren zur UEbertragung von Nachrichten mit Verlagerung der Sprechstroeme auf Teilstrecken der UEbertragungsleitung in verschiedene Frequenzbereiche |
| DEL90245D DE726511C (de) | 1934-03-14 | 1936-04-28 | Teilnehmerstation |
| DEL90279D DE726045C (de) | 1934-03-14 | 1936-05-01 | Anordnung zur UEbertragung von Nachrichten |
| NL82857A NL50600C (xx) | 1934-03-14 | 1937-06-10 | |
| FR823122D FR823122A (fr) | 1934-03-14 | 1937-06-15 | Dispositif pour la transmission de messages |
| GB18436/37A GB501915A (en) | 1934-03-14 | 1937-07-02 | Telephone exchange systems |
| US153074A US2184835A (en) | 1934-03-14 | 1937-07-10 | System for transmitting communications |
| DEL99627D DE730055C (de) | 1934-03-14 | 1939-12-09 | Fernplatzschaltung zur wahlweisen niederfrequenten oder hochfrequenten Abfrage |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL85522D DE708943C (de) | 1934-03-14 | 1934-03-14 | Verfahren zur UEbertragung von Nachrichten mit Verlagerung der Sprechstroeme auf Teilstrecken der UEbertragungsleitung in verschiedene Frequenzbereiche |
| DEL90279D DE726045C (de) | 1934-03-14 | 1936-05-01 | Anordnung zur UEbertragung von Nachrichten |
| NL82857A NL50600C (xx) | 1934-03-14 | 1937-06-10 | |
| FR823122T | 1937-06-15 | ||
| GB18436/37A GB501915A (en) | 1934-03-14 | 1937-07-02 | Telephone exchange systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL50600C true NL50600C (xx) | 1941-06-17 |
Family
ID=7285923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL82857A NL50600C (xx) | 1934-03-14 | 1937-06-10 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2184835A (xx) |
| DE (4) | DE708943C (xx) |
| FR (1) | FR823122A (xx) |
| GB (1) | GB501915A (xx) |
| NL (1) | NL50600C (xx) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2932694A (en) * | 1954-09-10 | 1960-04-12 | Bell Telephone Labor Inc | Rural carrier telephone transmission system |
| DE1112549B (de) * | 1955-12-30 | 1961-08-10 | Gen Electric Co Ltd | Fernsprechteilnehmerschaltung fuer den Parallelanschluss zweier Teilnehmer an eine Zweidrahtleitung |
| DE1028625B (de) * | 1957-03-14 | 1958-04-24 | Telefonbau | Schaltungsanordnung zum Einsatz von Traegerfrequenz auf Teilnehmeranschlussleitungen in Fernsprechanlagen mit Waehlerbetrieb |
| NL133409C (xx) * | 1960-07-21 | |||
| DE3802088C2 (de) * | 1987-01-26 | 1996-12-12 | Dirr Josef | Verfahren für die Codierung und Decodierung von Information in Endstellen von Vermittlungseinrichtungen und Übertragung über Anschlusswege/Leitungen zu und von den Vermittlungseinrichtungen |
-
1934
- 1934-03-14 DE DEL85522D patent/DE708943C/de not_active Expired
-
1936
- 1936-04-28 DE DEL90245D patent/DE726511C/de not_active Expired
- 1936-05-01 DE DEL90279D patent/DE726045C/de not_active Expired
-
1937
- 1937-06-10 NL NL82857A patent/NL50600C/xx active
- 1937-06-15 FR FR823122D patent/FR823122A/fr not_active Expired
- 1937-07-02 GB GB18436/37A patent/GB501915A/en not_active Expired
- 1937-07-10 US US153074A patent/US2184835A/en not_active Expired - Lifetime
-
1939
- 1939-12-09 DE DEL99627D patent/DE730055C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB501915A (en) | 1939-03-02 |
| DE708943C (de) | 1941-08-01 |
| DE730055C (de) | 1943-01-12 |
| DE726511C (de) | 1942-10-15 |
| US2184835A (en) | 1939-12-26 |
| DE726045C (de) | 1942-10-05 |
| FR823122A (fr) | 1938-01-14 |