BE416505A - - Google Patents
Info
- Publication number
- BE416505A BE416505A BE416505DA BE416505A BE 416505 A BE416505 A BE 416505A BE 416505D A BE416505D A BE 416505DA BE 416505 A BE416505 A BE 416505A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30957A US2091116A (en) | 1935-07-12 | 1935-07-12 | Automatic telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE416505A true BE416505A (de) |
Family
ID=21856901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE416505D BE416505A (de) | 1935-07-12 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2091116A (de) |
| BE (1) | BE416505A (de) |
| GB (1) | GB476587A (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE475627A (de) * | 1946-08-24 | |||
| US2562362A (en) * | 1947-11-04 | 1951-07-31 | Automatic Elect Lab | Testing system employing test distributor switches and test connector switches |
| US2623956A (en) * | 1949-02-14 | 1952-12-30 | Stromberg Carlson Co | Telephone test selector |
| US2564013A (en) * | 1949-06-17 | 1951-08-14 | Stromberg Carlson Co | Telephone test selector |
-
0
- BE BE416505D patent/BE416505A/xx unknown
-
1935
- 1935-07-12 US US30957A patent/US2091116A/en not_active Expired - Lifetime
-
1936
- 1936-06-11 GB GB16345/36A patent/GB476587A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2091116A (en) | 1937-08-24 |
| GB476587A (en) | 1937-12-13 |