BE519001A - - Google Patents
Info
- Publication number
- BE519001A BE519001A BE519001DA BE519001A BE 519001 A BE519001 A BE 519001A BE 519001D A BE519001D A BE 519001DA BE 519001 A BE519001 A BE 519001A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
-
- 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)
- Telephonic Communication Services (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE314513X | 1952-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE519001A true BE519001A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=6146321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE519001D BE519001A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1952-04-08 |
Country Status (5)
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1857833A (en) * | 1928-12-20 | 1932-05-10 | Int Standard Electric Corp | Automatic or semiautomatic telephone system |
| USRE22462E (en) * | 1937-04-30 | 1944-03-28 | Telephone system | |
| GB655974A (en) * | 1946-11-14 | 1951-08-08 | Claesson Harry Elias | Automatic switching arrangement |
| US2580069A (en) * | 1949-07-08 | 1951-12-25 | Bell Telephone Labor Inc | Dial pulse receiving circuit |
-
0
- US US2734101D patent/US2734101A/en not_active Expired - Lifetime
- BE BE519001D patent/BE519001A/xx unknown
-
1953
- 1953-03-04 CH CH314513D patent/CH314513A/de unknown
- 1953-04-07 FR FR1085035D patent/FR1085035A/fr not_active Expired
- 1953-04-08 GB GB9542/53A patent/GB747563A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1085035A (fr) | 1955-01-26 |
| GB747563A (en) | 1956-04-11 |
| US2734101A (en) | 1956-02-07 |
| CH314513A (de) | 1956-06-15 |