NL72500C - - Google Patents
Info
- Publication number
- NL72500C NL72500C NL137339A NL137339A NL72500C NL 72500 C NL72500 C NL 72500C NL 137339 A NL137339 A NL 137339A NL 137339 A NL137339 A NL 137339A NL 72500 C NL72500 C NL 72500C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Paper (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US550070A US2382893A (en) | 1944-08-18 | 1944-08-18 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL72500C true NL72500C (da) | 1953-06-15 |
Family
ID=24195617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL137339A NL72500C (da) | 1944-08-18 | 1947-12-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2382893A (da) |
| FR (1) | FR960189A (da) |
| GB (1) | GB654092A (da) |
| NL (1) | NL72500C (da) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE476048A (da) * | 1946-03-09 | |||
| GB680607A (en) * | 1947-07-10 | 1952-10-08 | Automatic Elect Lab | Toll switching telephone system |
| US2550755A (en) * | 1947-09-24 | 1951-05-01 | Automatic Elect Lab | Toll switching telephone system |
-
1944
- 1944-08-18 US US550070A patent/US2382893A/en not_active Expired - Lifetime
-
1947
- 1947-12-22 NL NL137339A patent/NL72500C/xx active
-
1948
- 1948-01-27 FR FR960189D patent/FR960189A/fr not_active Expired
- 1948-02-20 GB GB5091/48A patent/GB654092A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR960189A (da) | 1950-04-14 |
| GB654092A (en) | 1951-06-06 |
| US2382893A (en) | 1945-08-14 |