BE489875A - - Google Patents
Info
- Publication number
- BE489875A BE489875A BE489875DA BE489875A BE 489875 A BE489875 A BE 489875A BE 489875D A BE489875D A BE 489875DA BE 489875 A BE489875 A BE 489875A
- 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
- H04Q1/40—Signalling arrangements; Manipulation of signalling currents whereby duration of pulse or interval between two pulses is variable
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electrotherapy Devices (AREA)
- Mobile Radio Communication Systems (AREA)
- Exchange Systems With Centralized Control (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35911A US2603715A (en) | 1948-06-29 | 1948-06-29 | Pulse position call or dial receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE489875A true BE489875A (it) |
Family
ID=21885505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE489875D BE489875A (it) | 1948-06-29 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2603715A (it) |
| BE (1) | BE489875A (it) |
| FR (1) | FR982755A (it) |
| GB (1) | GB671407A (it) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2739301A (en) * | 1951-03-28 | 1956-03-20 | Bendix Aviat Corp | Checking circuit for correct number of received information pulses |
| US2851531A (en) * | 1952-03-12 | 1958-09-09 | Gen Telephone Lab Inc | Automatic telephone systems involving toll recording facilities |
| US2740003A (en) * | 1952-10-25 | 1956-03-27 | Bell Telephone Labor Inc | Rotational use of register circuits in telephone switching systems |
| US2886642A (en) * | 1953-04-13 | 1959-05-12 | Gen Dynamics Corp | Automatic toll ticketing |
| US2806205A (en) * | 1953-12-09 | 1957-09-10 | Applied Science Corp Of Prince | Center finder |
| US3212059A (en) * | 1955-07-29 | 1965-10-12 | Walter G Finch | Pulse responsive drum control and readout circuit |
| US3051901A (en) * | 1958-06-24 | 1962-08-28 | Bell Telephone Labor Inc | Encoder for pulse code modulation |
| US3102166A (en) * | 1959-08-28 | 1963-08-27 | Gen Dynamics Corp | Toll ticketing telephone system |
| US3366778A (en) * | 1964-11-16 | 1968-01-30 | Bell Telephone Labor Inc | Pulse register circuit |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB354405A (en) * | 1930-05-13 | 1931-08-13 | Standard Telephones Cables Ltd | Improvements in or relating to automatic or semi-automatic telephone exchange systems |
| US2074037A (en) * | 1932-04-11 | 1937-03-16 | Ibm | Automatic self-synchronized transmitting system |
| US2006354A (en) * | 1934-06-20 | 1935-07-02 | Bell Telephone Labor Inc | Telephone system |
| US2153202A (en) * | 1934-08-17 | 1939-04-04 | Ibm | Electrical filter |
| US2141372A (en) * | 1935-10-16 | 1938-12-27 | Bell Telephone Labor Inc | Telephone system |
| US2262838A (en) * | 1937-11-19 | 1941-11-18 | Int Standard Electric Corp | Electric signaling system |
| US2222131A (en) * | 1938-07-05 | 1940-11-19 | Associated Electric Lab Inc | Automatic switching system |
| NL87334C (it) * | 1938-10-03 | |||
| US2257568A (en) * | 1939-06-14 | 1941-09-30 | Bell Telephone Labor Inc | Communication system |
| US2341746A (en) * | 1940-04-15 | 1944-02-15 | Automatic Elect Lab | Telephone system |
| US2424577A (en) * | 1941-05-28 | 1947-07-29 | Int Standard Electric Corp | Long distance telephone signaling system |
| US2412974A (en) * | 1941-08-29 | 1946-12-24 | Int Standard Electric Corp | Electric wave communication system |
| US2329022A (en) * | 1941-10-01 | 1943-09-07 | Associated Electric Lab Inc | Call transmitter |
| US2360296A (en) * | 1942-09-11 | 1944-10-10 | Automatic Elect Lab | Signaling system |
| US2415929A (en) * | 1942-09-26 | 1947-02-18 | Rca Corp | Radio pulse system |
| US2351446A (en) * | 1942-12-22 | 1944-06-13 | Bell Telephone Labor Inc | Sender load control |
| US2383126A (en) * | 1943-07-08 | 1945-08-21 | Rca Corp | Spaced wave keying |
| US2471473A (en) * | 1943-11-01 | 1949-05-31 | Standard Telephones Cables Ltd | Transmission system |
| GB583541A (en) * | 1944-06-22 | 1946-12-20 | Standard Telephones Cables Ltd | Improvements in or relating to pulse modulation systems of electric communication |
| US2520170A (en) * | 1945-11-14 | 1950-08-29 | Standard Telephones Cables Ltd | Pulse responsive circuit |
| NL76339C (it) * | 1946-02-07 | |||
| US2443198A (en) * | 1946-09-06 | 1948-06-15 | Max E Sallach | Pulse selector unit |
-
0
- BE BE489875D patent/BE489875A/xx unknown
-
1948
- 1948-06-29 US US35911A patent/US2603715A/en not_active Expired - Lifetime
-
1949
- 1949-03-09 FR FR982755D patent/FR982755A/fr not_active Expired
- 1949-06-29 GB GB17206/49A patent/GB671407A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2603715A (en) | 1952-07-15 |
| FR982755A (fr) | 1951-06-14 |
| GB671407A (en) | 1952-05-07 |