BE497731A - - Google Patents
Info
- Publication number
- BE497731A BE497731A BE497731DA BE497731A BE 497731 A BE497731 A BE 497731A BE 497731D A BE497731D A BE 497731DA BE 497731 A BE497731 A BE 497731A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Interface Circuits In Exchanges (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24211/49A GB682244A (en) | 1949-09-21 | 1949-09-21 | Improvements in or relating to automatic switches for use in telephone or like systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE497731A true BE497731A (US06256357-20010703-M00001.png) |
Family
ID=10208131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE497731D BE497731A (US06256357-20010703-M00001.png) | 1949-09-21 |
Country Status (5)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2715159A (en) * | 1952-11-20 | 1955-08-09 | Stromberg Carlson Co | Telephone system |
| US4207438A (en) * | 1977-10-14 | 1980-06-10 | Societa Italiana Telecomunicazioni Siemens S.P.A. | Rotary selector adapted to scan a line multiple in a step-by-step telephone exchange |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1603929A (en) * | 1922-06-30 | 1926-10-19 | Automatic Electric Inc | Rotary connecter switch |
| US1631506A (en) * | 1922-09-11 | 1927-06-07 | Automatic Electric Inc | Automatic switch |
| US1556987A (en) * | 1923-09-07 | 1925-10-13 | Siemens Brothers & Co Ltd | Automatic and semiautomatic telephone system |
| US1694623A (en) * | 1924-01-24 | 1928-12-11 | Automatic Electric Inc | Telephone system |
| US1716986A (en) * | 1925-06-29 | 1929-06-11 | Automatic Electric Inc | Rotary connecter |
| US1638513A (en) * | 1925-09-03 | 1927-08-09 | Automatic Electric Inc | Automatic telephone system |
| US1667950A (en) * | 1926-08-18 | 1928-05-01 | Automatic Electric Inc | Automatic telephone system |
| US1674677A (en) * | 1927-01-20 | 1928-06-26 | American Telephone & Telegraph | Connecter-switch circuit |
| GB320938A (en) * | 1928-07-26 | 1929-10-28 | Automatio Telephone Mfg Compan | Improvements in or relating to telephone systems |
| US2419282A (en) * | 1944-06-28 | 1947-04-22 | Automatic Elect Lab | Telephone system |
-
0
- NL NL6702226.A patent/NL156021B/xx unknown
- BE BE497731D patent/BE497731A/xx unknown
-
1949
- 1949-09-21 GB GB24211/49A patent/GB682244A/en not_active Expired
-
1950
- 1950-09-11 US US184192A patent/US2667541A/en not_active Expired - Lifetime
- 1950-09-22 DE DEA3602A patent/DE854535C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB682244A (en) | 1952-11-05 |
| DE854535C (de) | 1952-11-04 |
| NL156021B (nl) | |
| US2667541A (en) | 1954-01-26 |
