FR847620A - Systèmes télégraphiques - Google Patents
Systèmes télégraphiquesInfo
- Publication number
- FR847620A FR847620A FR847620DA FR847620A FR 847620 A FR847620 A FR 847620A FR 847620D A FR847620D A FR 847620DA FR 847620 A FR847620 A FR 847620A
- Authority
- FR
- France
- Prior art keywords
- telegraph systems
- telegraph
- systems
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/202—Repeater circuits; Relay circuits using mechanical devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/26—Circuits with optical sensing means, i.e. using opto-couplers for isolation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Printing Plates And Materials Therefor (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US180066A US2214910A (en) | 1937-12-16 | 1937-12-16 | Start-stop repeater system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR847620A true FR847620A (fr) | 1939-10-12 |
Family
ID=22659083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR847620D Expired FR847620A (fr) | 1937-12-16 | 1938-12-15 | Systèmes télégraphiques |
Country Status (4)
Country | Link |
---|---|
US (1) | US2214910A (fr) |
CH (1) | CH233987A (fr) |
FR (1) | FR847620A (fr) |
GB (1) | GB506322A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4218614A (en) * | 1978-06-08 | 1980-08-19 | Westinghouse Electric Corp. | Device for measuring vibration amplitude |
US4321464A (en) * | 1978-06-08 | 1982-03-23 | Westinghouse Electric Corp. | Device for measuring vibration phase and amplitude |
-
1937
- 1937-12-16 US US180066A patent/US2214910A/en not_active Expired - Lifetime
-
1938
- 1938-10-14 GB GB29842/38A patent/GB506322A/en not_active Expired
- 1938-12-09 CH CH233987D patent/CH233987A/fr unknown
- 1938-12-15 FR FR847620D patent/FR847620A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2214910A (en) | 1940-09-17 |
CH233987A (fr) | 1944-08-31 |
GB506322A (en) | 1939-05-25 |
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