NL97476C - - Google Patents
Info
- Publication number
- NL97476C NL97476C NL97476DA NL97476C NL 97476 C NL97476 C NL 97476C NL 97476D A NL97476D A NL 97476DA NL 97476 C NL97476 C NL 97476C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
- H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
- H03F1/542—Replacing by standby devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Selective Calling Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL348726X | 1956-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL97476C true NL97476C (OSRAM) | 1900-01-01 |
Family
ID=19784976
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL97476D NL97476C (OSRAM) | 1956-03-22 | ||
| NL205669D NL205669A (OSRAM) | 1956-03-22 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL205669D NL205669A (OSRAM) | 1956-03-22 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2885567A (OSRAM) |
| CH (1) | CH348726A (OSRAM) |
| DE (1) | DE1113248B (OSRAM) |
| FR (1) | FR1169850A (OSRAM) |
| GB (1) | GB829348A (OSRAM) |
| NL (2) | NL205669A (OSRAM) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1068216A (en) * | 1964-11-13 | 1967-05-10 | Gen Electric Co Ltd | Improvements in or relating to electrical switching apparatus |
| DE1264515B (de) * | 1965-12-16 | 1968-03-28 | Fernmeldewerk Leipzig Veb | Verfahren zur unterbrechungsfreien Umschaltung von Betriebsgeraeten auf gleichartigeErsatzgeraete der Nachrichtentechnik, insbesondere der Traegerfrequenztechnik |
| DE1299730B (de) * | 1966-02-03 | 1969-07-24 | Siemens Ag | Einrichtung zur Umschaltung von Betriebsgeneratoren auf Ersatzgeneratoren bei Nachrichtenanlagen |
| KR100379734B1 (ko) * | 2000-12-15 | 2003-04-11 | 메딕스얼라인 주식회사 | 장중첩 치료장치 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE425740A (OSRAM) * | 1937-01-13 | |||
| DE726816C (de) * | 1935-08-24 | 1942-10-21 | Philips Patentverwaltung | Einrichtung zur UEbertragung von Rufsignalen in Traegerfrequenztelephonie-Anlagen |
| FR822799A (fr) * | 1936-06-26 | 1938-01-07 | Materiel Telephonique | Systèmes de transmission à onde porteuse |
| US2128230A (en) * | 1937-09-02 | 1938-08-30 | Bell Telephone Labor Inc | Power transfer circuit |
| DE692528C (de) * | 1938-08-16 | 1940-06-21 | Aeg | Anordnung zweier ausgangsseitig parallel geschalteter Traegerstromgeneratoren fuer Mehrfachuebertragungssysteme |
| BE440684A (OSRAM) * | 1939-09-14 | |||
| US2410678A (en) * | 1945-08-21 | 1946-11-05 | Wilcolator Co | Control inverter change-over system |
| NL77626C (OSRAM) * | 1947-01-24 | 1900-01-01 | ||
| GB744401A (en) * | 1951-04-09 | 1956-02-08 | Standard Telephones Cables Ltd | Improvements in or relating to electric power supply systems |
| US2663010A (en) * | 1952-02-01 | 1953-12-15 | Itt | Switching system |
-
0
- NL NL97476D patent/NL97476C/xx active
- NL NL205669D patent/NL205669A/xx unknown
-
1957
- 1957-02-26 US US64253557 patent/US2885567A/en not_active Expired - Lifetime
- 1957-03-19 GB GB897757A patent/GB829348A/en not_active Expired
- 1957-03-19 DE DEN13430A patent/DE1113248B/de active Pending
- 1957-03-20 CH CH348726D patent/CH348726A/de unknown
- 1957-03-20 FR FR1169850D patent/FR1169850A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1113248B (de) | 1961-08-31 |
| US2885567A (en) | 1959-05-05 |
| CH348726A (de) | 1960-09-15 |
| FR1169850A (fr) | 1959-01-06 |
| NL205669A (OSRAM) | 1900-01-01 |
| GB829348A (en) | 1960-03-02 |