BE420362A - - Google Patents
Info
- Publication number
- BE420362A BE420362A BE420362DA BE420362A BE 420362 A BE420362 A BE 420362A BE 420362D A BE420362D A BE 420362DA BE 420362 A BE420362 A BE 420362A
- 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
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR497727X | 1936-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE420362A true BE420362A (en:Method) |
Family
ID=8904965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE420362D BE420362A (en:Method) | 1936-03-31 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE420362A (en:Method) |
| FR (1) | FR815825A (en:Method) |
| GB (1) | GB497727A (en:Method) |
-
0
- BE BE420362D patent/BE420362A/xx unknown
-
1936
- 1936-03-31 FR FR815825D patent/FR815825A/fr not_active Expired
-
1937
- 1937-03-19 GB GB8189/37A patent/GB497727A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB497727A (en) | 1938-12-22 |
| FR815825A (fr) | 1937-07-23 |