LU64012A1 - - Google Patents
Info
- Publication number
- LU64012A1 LU64012A1 LU64012DA LU64012A1 LU 64012 A1 LU64012 A1 LU 64012A1 LU 64012D A LU64012D A LU 64012DA LU 64012 A1 LU64012 A1 LU 64012A1
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702049346 DE2049346C3 (de) | 1970-10-07 | Schaltungsanordnung zur Erzeugung eines akustischen Rufsignals für Endstellen in Fernmelde-, insbesondere Fernsprechanlagen mittels einer Schwingschaltung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU64012A1 true LU64012A1 (de) | 1972-04-12 |
Family
ID=5784495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU64012D LU64012A1 (de) | 1970-10-07 | 1971-10-05 |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT311432B (de) |
| BE (1) | BE773617A (de) |
| CH (1) | CH543204A (de) |
| FR (1) | FR2110265B1 (de) |
| GB (1) | GB1366167A (de) |
| LU (1) | LU64012A1 (de) |
| NL (1) | NL156882B (de) |
| SE (1) | SE371920B (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3120139C1 (de) * | 1981-05-20 | 1982-10-28 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur Anschaltung eines elektronischen Tonrufes an eine Zweiwegefernsprechstation |
-
1971
- 1971-09-10 CH CH1327271A patent/CH543204A/de not_active IP Right Cessation
- 1971-09-27 AT AT834471A patent/AT311432B/de not_active IP Right Cessation
- 1971-10-04 FR FR7135603A patent/FR2110265B1/fr not_active Expired
- 1971-10-05 LU LU64012D patent/LU64012A1/xx unknown
- 1971-10-06 GB GB4640471A patent/GB1366167A/en not_active Expired
- 1971-10-06 NL NL7113728A patent/NL156882B/xx unknown
- 1971-10-07 SE SE1272171A patent/SE371920B/xx unknown
- 1971-10-07 BE BE773617A patent/BE773617A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH543204A (de) | 1973-10-15 |
| GB1366167A (en) | 1974-09-11 |
| NL7113728A (de) | 1972-04-11 |
| NL156882B (nl) | 1978-05-16 |
| FR2110265A1 (de) | 1972-06-02 |
| DE2049346B2 (de) | 1974-01-31 |
| SE371920B (de) | 1974-12-02 |
| FR2110265B1 (de) | 1975-02-07 |
| BE773617A (fr) | 1972-04-07 |
| AT311432B (de) | 1973-11-12 |
| DE2049346A1 (de) | 1972-04-13 |