CH94122A - Installation de signalisation électrique. - Google Patents
Installation de signalisation électrique.Info
- Publication number
- CH94122A CH94122A CH94122DA CH94122A CH 94122 A CH94122 A CH 94122A CH 94122D A CH94122D A CH 94122DA CH 94122 A CH94122 A CH 94122A
- Authority
- CH
- Switzerland
- Prior art keywords
- electrical signaling
- signaling installation
- installation
- electrical
- signaling
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB219719A GB143949A (en) | 1919-01-29 | 1919-01-29 | Improvements in electric signalling systems, comprising amplifying or repeating apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
CH94122A true CH94122A (fr) | 1922-04-17 |
Family
ID=9735283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH94122D CH94122A (fr) | 1919-01-29 | 1919-02-04 | Installation de signalisation électrique. |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH94122A (fr) |
GB (1) | GB143949A (fr) |
-
1919
- 1919-01-29 GB GB219719A patent/GB143949A/en not_active Expired
- 1919-02-04 CH CH94122D patent/CH94122A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
GB143949A (en) | 1920-05-31 |
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