BE424989A - - Google Patents
Info
- Publication number
- BE424989A BE424989A BE424989DA BE424989A BE 424989 A BE424989 A BE 424989A BE 424989D A BE424989D A BE 424989DA BE 424989 A BE424989 A BE 424989A
- 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
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of DC pulses
- H04Q1/36—Pulse-correcting arrangements, e.g. for reducing effects due to interference
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB33169/36A GB486764A (en) | 1936-12-03 | 1936-12-03 | Improvements in or relating to electrical communication systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE424989A true BE424989A (en:Method) |
Family
ID=10349445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE424989D BE424989A (en:Method) | 1936-12-03 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2207537A (en:Method) |
| BE (1) | BE424989A (en:Method) |
| GB (1) | GB486764A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2597869A (en) * | 1946-11-30 | 1952-05-27 | Standard Telephones Cables Ltd | Impulse repeater for metered automatic telephone service |
-
0
- BE BE424989D patent/BE424989A/xx unknown
-
1936
- 1936-12-03 GB GB33169/36A patent/GB486764A/en not_active Expired
-
1937
- 1937-11-27 US US176804A patent/US2207537A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB486764A (en) | 1938-06-03 |
| US2207537A (en) | 1940-07-09 |