LU75726A1 - - Google Patents
Info
- Publication number
- LU75726A1 LU75726A1 LU75726A LU75726A LU75726A1 LU 75726 A1 LU75726 A1 LU 75726A1 LU 75726 A LU75726 A LU 75726A LU 75726 A LU75726 A LU 75726A LU 75726 A1 LU75726 A1 LU 75726A1
- Authority
- LU
- Luxembourg
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
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2539505A DE2539505C3 (de) | 1975-09-05 | 1975-09-05 | Freiton-Generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU75726A1 true LU75726A1 (xx) | 1977-04-28 |
Family
ID=5955672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU75726A LU75726A1 (xx) | 1975-09-05 | 1976-09-03 |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT350637B (xx) |
| BR (1) | BR7604863A (xx) |
| DE (1) | DE2539505C3 (xx) |
| ES (1) | ES451179A1 (xx) |
| IL (1) | IL50405A (xx) |
| LU (1) | LU75726A1 (xx) |
-
1975
- 1975-09-05 DE DE2539505A patent/DE2539505C3/de not_active Expired
-
1976
- 1976-07-27 BR BR7604863A patent/BR7604863A/pt unknown
- 1976-09-02 ES ES451179A patent/ES451179A1/es not_active Expired
- 1976-09-02 IL IL50405A patent/IL50405A/xx unknown
- 1976-09-03 AT AT656976A patent/AT350637B/de not_active IP Right Cessation
- 1976-09-03 LU LU75726A patent/LU75726A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES451179A1 (es) | 1977-08-16 |
| ATA656976A (de) | 1978-11-15 |
| IL50405A0 (en) | 1976-11-30 |
| DE2539505A1 (de) | 1977-03-10 |
| BR7604863A (pt) | 1977-08-09 |
| IL50405A (en) | 1979-09-30 |
| DE2539505C3 (de) | 1978-07-06 |
| DE2539505B2 (de) | 1977-11-24 |
| AT350637B (de) | 1979-06-11 |