BE509371A - - Google Patents
Info
- Publication number
- BE509371A BE509371A BE509371DA BE509371A BE 509371 A BE509371 A BE 509371A BE 509371D A BE509371D A BE 509371DA BE 509371 A BE509371 A BE 509371A
- 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)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE326022X | 1951-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE509371A true BE509371A (US20070167544A1-20070719-C00007.png) |
Family
ID=20307957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE509371D BE509371A (US20070167544A1-20070719-C00007.png) | 1951-02-23 |
Country Status (6)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE636734A (US20070167544A1-20070719-C00007.png) * | 1956-09-28 | |||
| GB863627A (en) * | 1958-06-06 | 1961-03-22 | Gen Electric Co Ltd | Improvements in or relating to automatic telephone systems |
| NL257816A (US20070167544A1-20070719-C00007.png) * | 1959-11-12 | |||
| US3115550A (en) * | 1960-07-22 | 1963-12-24 | Bell Telephone Labor Inc | Distributed line concentrator system |
| US3133156A (en) * | 1960-10-31 | 1964-05-12 | Bell Telephone Labor Inc | Telephone line concentrator |
| BE632293A (US20070167544A1-20070719-C00007.png) * | 1961-03-03 | |||
| US4791198A (en) * | 1984-07-05 | 1988-12-13 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Beta-lactam compound and preparation thereof |
| CN110838956A (zh) * | 2019-11-26 | 2020-02-25 | 苏州裕太车通电子科技有限公司 | 一种以太网通信距离的自动化测试装置及测试方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB516416A (en) * | 1938-06-14 | 1940-01-01 | Ass Telephone & Telegraph Co | Improvements in or relating to automatic or semi-automatic telephone systems |
| GB529025A (en) * | 1939-05-05 | 1940-11-12 | Automatic Telephone & Elect | Improvements in or relating to telephone systems |
| US2629016A (en) * | 1942-06-27 | 1953-02-17 | Bell Telephone Labor Inc | Automatic toll-ticketing system |
| US2618708A (en) * | 1942-08-06 | 1952-11-18 | Automatic Elect Lab | Telephone system with main and secondary register |
| US2588052A (en) * | 1943-05-05 | 1952-03-04 | American Telephone & Telegraph | Control circuit for telephone systems |
| US2532097A (en) * | 1946-12-31 | 1950-11-28 | Bell Telephone Labor Inc | Decentralized line switch arrangement |
-
0
- BE BE509371D patent/BE509371A/xx unknown
-
1952
- 1952-02-21 US US272857A patent/US2837602A/en not_active Expired - Lifetime
- 1952-02-22 GB GB4751/52A patent/GB710161A/en not_active Expired
- 1952-02-23 DE DET5805A patent/DE903594C/de not_active Expired
- 1952-02-23 CH CH326022D patent/CH326022A/de unknown
- 1952-02-23 FR FR1058866D patent/FR1058866A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2837602A (en) | 1958-06-03 |
| CH326022A (de) | 1957-11-30 |
| GB710161A (en) | 1954-06-09 |
| DE903594C (de) | 1954-02-08 |
| FR1058866A (fr) | 1954-03-19 |
