BE486823A - - Google Patents
Info
- Publication number
- BE486823A BE486823A BE486823DA BE486823A BE 486823 A BE486823 A BE 486823A BE 486823D A BE486823D A BE 486823DA BE 486823 A BE486823 A BE 486823A
- 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)
- Devices For Supply Of Signal Current (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR820021X | 1948-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE486823A true BE486823A (https=) |
Family
ID=9269810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE486823D BE486823A (https=) | 1948-01-28 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE486823A (https=) |
| DE (1) | DE820021C (https=) |
| FR (1) | FR1006528A (https=) |
| GB (1) | GB656959A (https=) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE745228C (de) * | 1939-07-28 | 1944-03-01 | Siemens Ag | Elektrischer Signalempfaenger |
-
0
- BE BE486823D patent/BE486823A/xx unknown
-
1948
- 1948-01-28 FR FR1006528D patent/FR1006528A/fr not_active Expired
-
1949
- 1949-01-17 GB GB1316/49A patent/GB656959A/en not_active Expired
-
1950
- 1950-05-03 DE DES3088A patent/DE820021C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB656959A (en) | 1951-09-05 |
| DE820021C (de) | 1951-11-08 |
| FR1006528A (fr) | 1952-04-24 |