BE518062A - - Google Patents
Info
- Publication number
- BE518062A BE518062A BE518062DA BE518062A BE 518062 A BE518062 A BE 518062A BE 518062D A BE518062D A BE 518062DA BE 518062 A BE518062 A BE 518062A
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1071567X | 1952-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE518062A true BE518062A (sv) |
Family
ID=7719843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE518062D BE518062A (sv) | 1952-02-28 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE518062A (sv) |
| FR (1) | FR1071567A (sv) |
-
0
- BE BE518062D patent/BE518062A/xx unknown
-
1953
- 1953-02-28 FR FR1071567D patent/FR1071567A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1071567A (fr) | 1954-09-02 |