BE475788A - - Google Patents
Info
- Publication number
- BE475788A BE475788A BE475788DA BE475788A BE 475788 A BE475788 A BE 475788A BE 475788D A BE475788D A BE 475788DA BE 475788 A BE475788 A BE 475788A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Exchange Systems With Centralized Control (AREA)
- Communication Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US481412A US2361313A (en) | 1943-04-01 | 1943-04-01 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE475788A true BE475788A (et) |
Family
ID=23911838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE475788D BE475788A (et) | 1943-04-01 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2361313A (et) |
| BE (1) | BE475788A (et) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2697134A (en) * | 1950-08-25 | 1954-12-14 | Automatic Elect Lab | Toll switching system |
| US2686843A (en) * | 1951-04-26 | 1954-08-17 | Bell Telephone Labor Inc | Call distributing service desk |
| US2839612A (en) * | 1953-06-22 | 1958-06-17 | Gen Telephone Lab Inc | Toll switching system |
-
0
- BE BE475788D patent/BE475788A/xx unknown
-
1943
- 1943-04-01 US US481412A patent/US2361313A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2361313A (en) | 1944-10-24 |