BE516817A - - Google Patents
Info
- Publication number
- BE516817A BE516817A BE516817DA BE516817A BE 516817 A BE516817 A BE 516817A BE 516817D A BE516817D A BE 516817DA BE 516817 A BE516817 A BE 516817A
- 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
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB956134X | 1952-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE516817A true BE516817A (en:Method) |
Family
ID=10786438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE516817D BE516817A (en:Method) | 1952-01-11 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE516817A (en:Method) |
| DE (1) | DE956134C (en:Method) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2547023A (en) * | 1947-05-23 | 1951-04-03 | Motorola Inc | Selective calling system |
| FR1015224A (fr) * | 1950-03-28 | 1952-08-29 | Telecommunications Sa | Signaleur retransmetteur d'impulsions |
-
0
- BE BE516817D patent/BE516817A/xx unknown
-
1953
- 1953-01-06 DE DET7224A patent/DE956134C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE956134C (de) | 1957-01-17 |