BE516334A - - Google Patents
Info
- Publication number
- BE516334A BE516334A BE516334DA BE516334A BE 516334 A BE516334 A BE 516334A BE 516334D A BE516334D A BE 516334DA BE 516334 A BE516334 A BE 516334A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Control Of Eletrric Generators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE721795X | 1951-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE516334A true BE516334A (en:Method) |
Family
ID=20316016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE516334D BE516334A (en:Method) | 1951-12-19 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE516334A (en:Method) |
| FR (1) | FR1067734A (en:Method) |
| GB (1) | GB721795A (en:Method) |
-
0
- BE BE516334D patent/BE516334A/xx unknown
-
1952
- 1952-12-16 FR FR1067734D patent/FR1067734A/fr not_active Expired
- 1952-12-19 GB GB32254/52A patent/GB721795A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1067734A (fr) | 1954-06-17 |
| GB721795A (en) | 1955-01-12 |