BE535840A - - Google Patents
Info
- Publication number
- BE535840A BE535840A BE535840DA BE535840A BE 535840 A BE535840 A BE 535840A BE 535840D A BE535840D A BE 535840DA BE 535840 A BE535840 A BE 535840A
- 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
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Meter Arrangements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1102151T | 1954-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE535840A true BE535840A (cs) |
Family
ID=9621464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE535840D BE535840A (cs) | 1954-03-31 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE535840A (cs) |
| CH (1) | CH321343A (cs) |
| FR (1) | FR1102151A (cs) |
| GB (1) | GB769369A (cs) |
-
0
- BE BE535840D patent/BE535840A/xx unknown
-
1954
- 1954-03-31 FR FR1102151D patent/FR1102151A/fr not_active Expired
-
1955
- 1955-02-16 CH CH321343D patent/CH321343A/fr unknown
- 1955-03-31 GB GB9452/55A patent/GB769369A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB769369A (en) | 1957-03-06 |
| CH321343A (fr) | 1957-04-30 |
| FR1102151A (fr) | 1955-10-18 |