BE523339A - - Google Patents
Info
- Publication number
- BE523339A BE523339A BE523339DA BE523339A BE 523339 A BE523339 A BE 523339A BE 523339D A BE523339D A BE 523339DA BE 523339 A BE523339 A BE 523339A
- 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)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1624852A GB702253A (en) | 1952-06-27 | 1952-06-27 | Improvements in or relating to voice frequency signal receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE523339A true BE523339A (en:Method) |
Family
ID=10073874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE523339D BE523339A (en:Method) | 1952-06-27 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE523339A (en:Method) |
| GB (1) | GB702253A (en:Method) |
-
0
- BE BE523339D patent/BE523339A/xx unknown
-
1952
- 1952-06-27 GB GB1624852A patent/GB702253A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB702253A (en) | 1954-01-13 |