BE502796A - - Google Patents
Info
- Publication number
- BE502796A BE502796A BE502796DA BE502796A BE 502796 A BE502796 A BE 502796A BE 502796D A BE502796D A BE 502796DA BE 502796 A BE502796 A BE 502796A
- 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)
- Telephonic Communication Services (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US158218A US2778878A (en) | 1950-04-26 | 1950-04-26 | Repetition telephone dialing by pulse code modulated carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE502796A true BE502796A (US07922777-20110412-C00004.png) |
Family
ID=22567146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE502796D BE502796A (US07922777-20110412-C00004.png) | 1950-04-26 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2778878A (US07922777-20110412-C00004.png) |
| BE (1) | BE502796A (US07922777-20110412-C00004.png) |
| GB (1) | GB697920A (US07922777-20110412-C00004.png) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE567179A (US07922777-20110412-C00004.png) * | 1952-07-01 | |||
| US2970269A (en) * | 1956-05-18 | 1961-01-31 | Toledo Scale Corp | Pulse generator |
| US2968696A (en) * | 1956-06-01 | 1961-01-17 | Gen Dynamics Corp | Electronic telephone system |
| US3156829A (en) * | 1958-10-16 | 1964-11-10 | Richard K Richards | Flip-flop interconnection circuits |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1881273A (en) * | 1931-01-07 | 1932-10-04 | Western Electric Co | Telephone system |
| US2211020A (en) * | 1939-01-21 | 1940-08-13 | Bell Telephone Labor Inc | Telephone system |
| US2257568A (en) * | 1939-06-14 | 1941-09-30 | Bell Telephone Labor Inc | Communication system |
| US2250101A (en) * | 1939-12-07 | 1941-07-22 | Bell Telephone Labor Inc | Telephone system |
| US2492136A (en) * | 1946-03-14 | 1949-12-27 | Fed Telecomm Lab Inc | Electronic telephone exchange |
-
0
- BE BE502796D patent/BE502796A/xx unknown
-
1950
- 1950-04-26 US US158218A patent/US2778878A/en not_active Expired - Lifetime
-
1951
- 1951-02-02 GB GB2643/51A patent/GB697920A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB697920A (en) | 1953-09-30 |
| US2778878A (en) | 1957-01-22 |
