BE517376A - - Google Patents
Info
- Publication number
- BE517376A BE517376A BE517376DA BE517376A BE 517376 A BE517376 A BE 517376A BE 517376D A BE517376D A BE 517376DA BE 517376 A BE517376 A BE 517376A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
- H04Q1/22—Automatic arrangements
- H04Q1/26—Automatic arrangements for signalling trouble in unoccupied sub-exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/407—Monitoring; Testing of relay systems without selective localization
- H04B17/409—Monitoring; Testing of relay systems without selective localization by means of resistance, voltage or current measurement
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Locating Faults (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2887/52A GB700149A (en) | 1952-02-04 | 1952-02-04 | Improvements in or relating to fault alarm arrangements for electric communication systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE517376A true BE517376A (de) | 1900-01-01 |
Family
ID=9747876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE517376D BE517376A (de) | 1952-02-04 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2744170A (de) |
| BE (1) | BE517376A (de) |
| DE (1) | DE942278C (de) |
| ES (1) | ES207256A1 (de) |
| GB (1) | GB700149A (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3082300A (en) * | 1960-08-26 | 1963-03-19 | Raytheon Co | Transmission line fault location |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1699415A (en) * | 1926-11-20 | 1929-01-15 | Siemens Ag | Telephone system |
| US2070671A (en) * | 1933-10-04 | 1937-02-16 | Bell Telephone Labor Inc | Repeater testing |
| US2260160A (en) * | 1940-04-26 | 1941-10-21 | Bell Telephone Labor Inc | Location and identification of faults in signaling transmission systems |
| US2307896A (en) * | 1941-05-06 | 1943-01-12 | American Telephone & Telegraph | System for indicating circuit faults in transmission systems |
-
0
- BE BE517376D patent/BE517376A/xx unknown
-
1952
- 1952-02-04 GB GB2887/52A patent/GB700149A/en not_active Expired
-
1953
- 1953-01-15 ES ES0207256A patent/ES207256A1/es not_active Expired
- 1953-01-22 US US332602A patent/US2744170A/en not_active Expired - Lifetime
- 1953-02-04 DE DEI6872A patent/DE942278C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB700149A (en) | 1953-11-25 |
| US2744170A (en) | 1956-05-01 |
| ES207256A1 (es) | 1953-03-01 |
| DE942278C (de) | 1956-05-03 |