BE518743A - - Google Patents
Info
- Publication number
- BE518743A BE518743A BE518743DA BE518743A BE 518743 A BE518743 A BE 518743A BE 518743D A BE518743D A BE 518743DA BE 518743 A BE518743 A BE 518743A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
- H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H63/00—Details of electrically-operated selector switches
- H01H63/36—Circuit arrangements for ensuring correct or desired operation and not adapted to a particular application of the selector switch
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8022/52A GB723997A (en) | 1953-03-18 | 1953-03-18 | Automatic telecommunication exchange systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE518743A true BE518743A (ja) |
Family
ID=9844287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE518743D BE518743A (ja) | 1953-03-18 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2721233A (ja) |
| BE (1) | BE518743A (ja) |
| GB (1) | GB723997A (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3301964A (en) * | 1963-12-09 | 1967-01-31 | Bell Telephone Labor Inc | System for releasing magnetic latching crossbar switches in which hold magnets are interconnected over crosspoint contacts of the preceding switch |
| US3400225A (en) * | 1965-07-13 | 1968-09-03 | Internat Telephone & Telegraph | Magnetic latching switch having residual magnetism for crosspoint hold means |
| US3863035A (en) * | 1972-06-20 | 1975-01-28 | Lynch Communication Systems | Call concentrator switching matrix |
-
0
- BE BE518743D patent/BE518743A/xx unknown
-
1953
- 1953-03-18 GB GB8022/52A patent/GB723997A/en not_active Expired
- 1953-03-23 US US344150A patent/US2721233A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2721233A (en) | 1955-10-18 |
| GB723997A (en) | 1955-02-16 |