BE356244A - - Google Patents
Info
- Publication number
- BE356244A BE356244A BE356244DA BE356244A BE 356244 A BE356244 A BE 356244A BE 356244D A BE356244D A BE 356244DA BE 356244 A BE356244 A BE 356244A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
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 |
|---|---|---|---|
| GB32284/27A GB306990A (en) | 1927-11-30 | 1927-11-30 | Improvements in or relating to testing devices for impulse senders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE356244A true BE356244A (en:Method) |
Family
ID=10336211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE356244D BE356244A (en:Method) | 1927-11-30 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1784612A (en:Method) |
| BE (1) | BE356244A (en:Method) |
| GB (1) | GB306990A (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2732441A (en) * | 1956-01-24 | gatzert | ||
| US2500287A (en) * | 1945-11-14 | 1950-03-14 | Automatic Elect Lab | Dial speed tester with tone indication |
| US2857484A (en) * | 1954-01-25 | 1958-10-21 | Itt | Automatic dial-speed tester |
-
0
- BE BE356244D patent/BE356244A/xx unknown
-
1927
- 1927-11-30 GB GB32284/27A patent/GB306990A/en not_active Expired
-
1928
- 1928-11-05 US US317231A patent/US1784612A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1784612A (en) | 1930-12-09 |
| GB306990A (en) | 1929-02-28 |