BE500638A - - Google Patents
Info
- Publication number
- BE500638A BE500638A BE500638DA BE500638A BE 500638 A BE500638 A BE 500638A BE 500638D A BE500638D A BE 500638DA BE 500638 A BE500638 A BE 500638A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Structure Of Telephone Exchanges (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB304899X | 1950-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE500638A true BE500638A (en:Method) |
Family
ID=10308488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE500638D BE500638A (en:Method) | 1950-01-16 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2744163A (en:Method) |
| BE (1) | BE500638A (en:Method) |
| CH (1) | CH304899A (en:Method) |
| DE (1) | DE865474C (en:Method) |
| FR (1) | FR1109008A (en:Method) |
| GB (1) | GB700089A (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2725428A (en) * | 1953-01-06 | 1955-11-29 | Itt | Multi-group primary-secondary-spread crossbar telephone system |
| NL81824C (en:Method) * | 1953-03-12 | |||
| NL300460A (en:Method) * | 1953-11-30 | |||
| US2871297A (en) * | 1954-03-08 | 1959-01-27 | Itt | 100-line direct-access crossbar telephone switching unit |
| GB944162A (en) * | 1956-05-08 | 1963-12-11 | Standard Telephones Cables Ltd | Improvements in or relating to automatic telephone exchanges |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2612564A (en) * | 1946-06-05 | 1952-09-30 | Roelof M M Oberman | Combined line finder final selector circuit |
| US2620400A (en) * | 1949-10-17 | 1952-12-02 | Snijders Antonie | Arrangement for comparing voltages |
-
0
- BE BE500638D patent/BE500638A/xx unknown
-
1950
- 1950-01-16 GB GB1096/50A patent/GB700089A/en not_active Expired
-
1951
- 1951-01-12 CH CH304899D patent/CH304899A/fr unknown
- 1951-01-14 DE DEI3697A patent/DE865474C/de not_active Expired
- 1951-01-16 FR FR1109008D patent/FR1109008A/fr not_active Expired
-
1953
- 1953-03-23 US US343871A patent/US2744163A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB700089A (en) | 1953-11-25 |
| DE865474C (de) | 1953-02-02 |
| CH304899A (fr) | 1955-01-31 |
| FR1109008A (fr) | 1956-01-20 |
| US2744163A (en) | 1956-05-01 |