BE507510A - - Google Patents
Info
- Publication number
- BE507510A BE507510A BE507510DA BE507510A BE 507510 A BE507510 A BE 507510A BE 507510D A BE507510D A BE 507510DA BE 507510 A BE507510 A BE 507510A
- 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
- H04M19/026—Arrangements for interrupting the ringing current
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL699941X | 1950-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE507510A true BE507510A (US20080094685A1-20080424-C00004.png) |
Family
ID=19809003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE507510D BE507510A (US20080094685A1-20080424-C00004.png) | 1950-12-02 |
Country Status (5)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE524389A (US20080094685A1-20080424-C00004.png) * | 1952-11-20 | |||
| DE1074662B (de) * | 1957-10-10 | 1960-02-04 | Pye Limited, Cambridge (Grossbritannien) | Automatisches Telefonsystem mit elektronischer Schaltung des Rufstromes zu einem Teilnehmer |
-
0
- NL NL7412172.A patent/NL157702B/xx unknown
- BE BE507510D patent/BE507510A/xx unknown
-
1951
- 1951-11-29 GB GB28023/51A patent/GB699941A/en not_active Expired
- 1951-11-29 DE DEN4763A patent/DE885726C/de not_active Expired
- 1951-11-30 FR FR1054169D patent/FR1054169A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1054169A (fr) | 1954-02-09 |
| DE885726C (de) | 1953-08-06 |
| NL157702B (nl) | |
| GB699941A (en) | 1953-11-18 |
