BE480490A - - Google Patents
Info
- Publication number
- BE480490A BE480490A BE480490DA BE480490A BE 480490 A BE480490 A BE 480490A BE 480490D A BE480490D A BE 480490DA BE 480490 A BE480490 A BE 480490A
- 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
- H04Q1/442—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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Meter Arrangements (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Selective Calling Equipment (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2588685X | 1939-07-26 | ||
| GB267229X | 1939-08-09 | ||
| GB2613278X | 1940-01-05 | ||
| US743964A US2588685A (en) | 1939-07-26 | 1947-04-25 | Register-sender for automatic telephony |
| US130127A US2613274A (en) | 1939-07-26 | 1949-11-30 | Automatic recording of telephone numbers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE480490A true BE480490A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=32303753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE480490D BE480490A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1939-07-26 |
Country Status (5)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE480490A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1939-07-26 | |||
| US2588685A (en) * | 1939-07-26 | 1952-03-11 | Automatic Elect Lab | Register-sender for automatic telephony |
| US2588686A (en) * | 1940-04-01 | 1952-03-11 | Automatic Elect Lab | Telephone system providing operator service when all trunks are busy |
| BE483205A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1942-06-27 | |||
| BE468835A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1945-11-08 | |||
| BE520982A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1951-08-16 | |||
| US2871297A (en) * | 1954-03-08 | 1959-01-27 | Itt | 100-line direct-access crossbar telephone switching unit |
| US2875286A (en) * | 1955-04-21 | 1959-02-24 | North Electric Co | Telephone call surveying equipment |
| US2912542A (en) * | 1956-12-03 | 1959-11-10 | Gen Telephone Lab Inc | Relay assembly |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1724174A (en) * | 1929-08-13 | To automatic electbic inc | ||
| GB346301A (en) * | 1930-01-07 | 1931-04-07 | Standard Telephones Cables Ltd | Improvements in or relating to automatic or semi-automatic telephone exchange systems |
| FR738032A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1931-06-02 | 1932-12-20 | ||
| US2165924A (en) * | 1933-10-31 | 1939-07-11 | Bell Telephone Labor Inc | Telephone system |
| US2180824A (en) * | 1937-03-10 | 1939-11-21 | Western Electric Co | Automatic call ticketing system |
| US2273165A (en) * | 1938-04-06 | 1942-02-17 | Western Electric Co | Tariff determining equipment for telephone systems |
| US2373908A (en) * | 1938-06-14 | 1945-04-17 | Automatic Elect Lab | Telephone system |
| GB516416A (en) * | 1938-06-14 | 1940-01-01 | Ass Telephone & Telegraph Co | Improvements in or relating to automatic or semi-automatic telephone systems |
| US2486722A (en) * | 1938-06-21 | 1949-11-01 | Automatic Elect Lab | Automatic toll-ticketing telephone system |
| GB524003A (en) * | 1939-01-19 | 1940-07-26 | Ass Telephone & Telegraph Co | Improvements in or relating to telephone systems |
| GB530614A (en) * | 1939-05-11 | 1940-12-16 | Ass Telephone & Telegraph Co | Improvements in or relating to telephone systems |
| BE480490A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1939-07-26 | |||
| US2385228A (en) * | 1940-08-26 | 1945-09-18 | Automatic Elect Lab | Telephone system |
-
0
- BE BE480490D patent/BE480490A/xx unknown
-
1939
- 1939-07-26 GB GB21781/39A patent/GB532729A/en not_active Expired
- 1939-07-26 GB GB21721/39A patent/GB540128A/en not_active Expired
- 1939-07-26 GB GB21779/39A patent/GB532728A/en not_active Expired
- 1939-07-26 GB GB21782/39A patent/GB532730A/en not_active Expired
- 1939-08-09 GB GB22978/39A patent/GB545182A/en not_active Expired
-
1942
- 1942-12-15 GB GB17849/42A patent/GB573869A/en not_active Expired
-
1947
- 1947-03-22 CH CH267229D patent/CH267229A/fr unknown
- 1947-04-25 US US743965A patent/US2613278A/en not_active Expired - Lifetime
- 1947-06-13 FR FR947899D patent/FR947899A/fr not_active Expired
- 1947-06-14 FR FR57210D patent/FR57210E/fr not_active Expired
- 1947-06-14 FR FR56826D patent/FR56826E/fr not_active Expired
-
1949
- 1949-11-30 US US130127A patent/US2613274A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB540128A (en) | 1941-10-07 |
| FR947899A (fr) | 1949-07-15 |
| GB532730A (en) | 1941-01-30 |
| FR57210E (fr) | 1952-12-23 |
| GB532728A (en) | 1941-01-30 |
| CH267229A (fr) | 1950-03-15 |
| US2613278A (en) | 1952-10-07 |
| US2613274A (en) | 1952-10-07 |
| FR56826E (fr) | 1952-10-07 |
| GB545182A (en) | 1942-05-14 |
| GB532729A (en) | 1941-01-30 |
| GB573869A (en) | 1945-12-11 |