FR957159A - - Google Patents
Info
- Publication number
- FR957159A FR957159A FR957159DA FR957159A FR 957159 A FR957159 A FR 957159A FR 957159D A FR957159D A FR 957159DA FR 957159 A FR957159 A FR 957159A
- Authority
- FR
- France
- 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
- 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
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2125039A GB532523A (en) | 1939-07-21 | 1939-07-21 | Improvements in systems for the electric transmission of signals over wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR957159A true FR957159A (fr) | 1950-02-16 |
Family
ID=10159740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR957159D Expired FR957159A (fr) | 1939-07-21 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE441289A (fr) |
| FR (1) | FR957159A (fr) |
| GB (3) | GB532582A (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1113969B (de) * | 1957-02-07 | 1961-09-21 | Cie Ind Des Telephones Soc An | Untersee-Fernmeldekabelanordnung mit starren, druckfesten Verstaerkern |
-
0
- BE BE441289D patent/BE441289A/xx unknown
- FR FR957159D patent/FR957159A/fr not_active Expired
-
1939
- 1939-07-21 GB GB1080640A patent/GB532582A/en not_active Expired
- 1939-07-21 GB GB2125039A patent/GB532523A/en not_active Expired
- 1939-07-21 GB GB1091040A patent/GB532584A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1113969B (de) * | 1957-02-07 | 1961-09-21 | Cie Ind Des Telephones Soc An | Untersee-Fernmeldekabelanordnung mit starren, druckfesten Verstaerkern |
Also Published As
| Publication number | Publication date |
|---|---|
| GB532584A (en) | 1941-01-27 |
| GB532523A (en) | 1941-01-27 |
| GB532582A (en) | 1941-01-27 |
| BE441289A (fr) | 1900-01-01 |