CH219021A - Electric telecommunication system. - Google Patents
Electric telecommunication system.Info
- Publication number
- CH219021A CH219021A CH219021DA CH219021A CH 219021 A CH219021 A CH 219021A CH 219021D A CH219021D A CH 219021DA CH 219021 A CH219021 A CH 219021A
- Authority
- CH
- Switzerland
- Prior art keywords
- telecommunication system
- electric telecommunication
- electric
- telecommunication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/10—Intermediate station arrangements, e.g. for branching, for tapping-off
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB219021X | 1939-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH219021A true CH219021A (en) | 1942-01-15 |
Family
ID=10170719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH219021D CH219021A (en) | 1939-06-17 | 1940-10-04 | Electric telecommunication system. |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE475394A (en) |
CH (1) | CH219021A (en) |
FR (1) | FR956830A (en) |
NL (1) | NL70170C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE932135C (en) * | 1952-05-24 | 1955-08-25 | Felten & Guilleaume Carlswerk | Device for monitoring, remote control or fault location of transmission systems |
DE943476C (en) * | 1952-07-15 | 1956-05-24 | Felten & Guilleaume Carlswerk | Arrangement for remote switching of amplifiers in unmanned intermediate stations |
DE951508C (en) * | 1953-01-15 | 1956-10-31 | Felten & Guilleaume Carlswerk | Installation in transmission systems with several unmanned and remotely fed amplifier stations for switching the operational amplifiers to reserve amplifiers |
-
0
- BE BE475394D patent/BE475394A/xx unknown
- FR FR956830D patent/FR956830A/fr not_active Expired
- NL NL70170D patent/NL70170C/xx active
-
1940
- 1940-10-04 CH CH219021D patent/CH219021A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE932135C (en) * | 1952-05-24 | 1955-08-25 | Felten & Guilleaume Carlswerk | Device for monitoring, remote control or fault location of transmission systems |
DE943476C (en) * | 1952-07-15 | 1956-05-24 | Felten & Guilleaume Carlswerk | Arrangement for remote switching of amplifiers in unmanned intermediate stations |
DE951508C (en) * | 1953-01-15 | 1956-10-31 | Felten & Guilleaume Carlswerk | Installation in transmission systems with several unmanned and remotely fed amplifier stations for switching the operational amplifiers to reserve amplifiers |
Also Published As
Publication number | Publication date |
---|---|
NL70170C (en) | 1900-01-01 |
FR956830A (en) | 1950-02-08 |
BE475394A (en) | 1900-01-01 |
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