FR961957A - - Google Patents
Info
- Publication number
- FR961957A FR961957A FR961957DA FR961957A FR 961957 A FR961957 A FR 961957A FR 961957D A FR961957D A FR 961957DA FR 961957 A FR961957 A FR 961957A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
-
- 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)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US335241A US2261370A (en) | 1940-05-15 | 1940-05-15 | Telephone system |
| US335240A US2259101A (en) | 1940-05-15 | 1940-05-15 | Telephone system |
| US335245A US2259100A (en) | 1940-05-15 | 1940-05-15 | Operator's position circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR961957A true FR961957A (en) | 1950-05-26 |
Family
ID=27407045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR961957D Expired FR961957A (en) | 1940-05-15 |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US2261370A (en) |
| BE (1) | BE483523A (en) |
| FR (1) | FR961957A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2618708A (en) * | 1942-08-06 | 1952-11-18 | Automatic Elect Lab | Telephone system with main and secondary register |
| NL61666C (en) * | 1944-05-17 | 1948-09-15 | Ericsson Telefon Ab L M | |
| US2534822A (en) * | 1944-11-17 | 1950-12-19 | Ericsson Telefon Ab L M | Connecting device for telephone exchanges using a register |
| US2468299A (en) * | 1945-07-07 | 1949-04-26 | Bell Telephone Labor Inc | Supervisory signaling in telephone or like switching systems |
| BE470519A (en) * | 1946-01-26 | |||
| US2573569A (en) * | 1948-10-29 | 1951-10-30 | Bell Telephone Labor Inc | Frame and trunk selection |
| NL161592B (en) * | 1950-05-31 | Xerox Corp | PROCEDURE FOR PREPARING A CYAN BLUE ELECTROPHOTOGRAPHIC TONER. | |
| US2747021A (en) * | 1950-09-21 | 1956-05-22 | Gen Electric Co Ltd | Telecommunication systems embodying automatic exchanges |
| BE548044A (en) * | 1955-05-23 | |||
| US2981803A (en) * | 1955-12-28 | 1961-04-25 | Bell Telephone Labor Inc | Program switching system |
| NL263157A (en) * | 1960-04-04 |
-
0
- BE BE483523D patent/BE483523A/xx unknown
- FR FR961957D patent/FR961957A/fr not_active Expired
-
1940
- 1940-05-15 US US335241A patent/US2261370A/en not_active Expired - Lifetime
- 1940-05-15 US US335240A patent/US2259101A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE483523A (en) | |
| US2261370A (en) | 1941-11-04 |
| US2259101A (en) | 1941-10-14 |