BE498516A - - Google Patents
Info
- Publication number
- BE498516A BE498516A BE498516DA BE498516A BE 498516 A BE498516 A BE 498516A BE 498516D A BE498516D A BE 498516DA BE 498516 A BE498516 A BE 498516A
- 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)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL291944X | 1949-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE498516A true BE498516A (en]) |
Family
ID=19782797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE498516D BE498516A (en]) | 1949-10-07 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2693505A (en]) |
| BE (1) | BE498516A (en]) |
| CH (1) | CH291944A (en]) |
| DE (1) | DE838621C (en]) |
| FR (1) | FR1028851A (en]) |
| NL (2) | NL74001C (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2767247A (en) * | 1953-04-23 | 1956-10-16 | Automatic Elect Lab | Arrangements for single-motion numerical switches in telephone systems |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1648009A (en) * | 1927-11-08 | Machine-switching selector-switch | ||
| US1903207A (en) * | 1931-03-02 | 1933-03-28 | Associated Electric Lab Inc | Telephone system |
| US1877883A (en) * | 1931-10-19 | 1932-09-20 | Associated Electric Lab Inc | Automatic telephone system |
| FR744372A (en]) * | 1931-11-09 | 1933-04-19 | ||
| US2057890A (en) * | 1934-05-09 | 1936-10-20 | Siemens Ag | Telephone system |
| USRE22475E (en) * | 1940-06-22 | 1944-05-09 | Telephone system | |
| FR882420A (en]) * | 1941-06-10 | 1943-06-18 | ||
| NL57908C (nl) * | 1942-03-13 | 1946-07-15 | Bell Telephone Manufacturing Co Sa | Telefoonstelsel met in één of een aantal opvolgende trappen toegepaste groepkiezers |
| NL57917C (en]) * | 1942-06-12 | |||
| US2506200A (en) * | 1943-12-13 | 1950-05-02 | Ericsson Telefon Ab L M | Device for selection of groups of lines within automatic telephone exchanges |
| GB571520A (en) * | 1944-01-12 | 1945-08-28 | Siemens Brothers & Co Ltd | Improvements relating to electric selective signalling systems |
-
0
- NL NL666604556A patent/NL149217B/xx unknown
- BE BE498516D patent/BE498516A/xx unknown
- NL NL74001D patent/NL74001C/xx active
-
1950
- 1950-10-04 DE DEN2968A patent/DE838621C/de not_active Expired
- 1950-10-05 CH CH291944D patent/CH291944A/de unknown
- 1950-10-05 US US188535A patent/US2693505A/en not_active Expired - Lifetime
- 1950-10-05 FR FR1028851D patent/FR1028851A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1028851A (fr) | 1953-05-28 |
| DE838621C (de) | 1952-05-12 |
| NL149217B (nl) | |
| CH291944A (de) | 1953-07-15 |
| US2693505A (en) | 1954-11-02 |
| NL74001C (en]) |