NL67487C - - Google Patents
Info
- Publication number
- NL67487C NL67487C NL67487DA NL67487C NL 67487 C NL67487 C NL 67487C NL 67487D A NL67487D A NL 67487DA NL 67487 C NL67487 C NL 67487C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Structure Of Telephone Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3019/44A GB571811A (en) | 1944-02-18 | 1944-02-18 | Improvements in or relating to finder switch arrangements for use in telephone or like signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL67487C true NL67487C (it) |
Family
ID=9750435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL67487D NL67487C (it) | 1944-02-18 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2442092A (it) |
| FR (1) | FR929007A (it) |
| GB (1) | GB571811A (it) |
| NL (1) | NL67487C (it) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821573A (en) * | 1953-07-24 | 1958-01-28 | Itt | Dual-switch finder combination |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1837801A (en) * | 1927-12-09 | 1931-12-22 | Ass Telephone & Telegraph Co | Telephone system |
| US1831922A (en) * | 1930-02-10 | 1931-11-17 | American Telephone & Telegraph | Telephone exchange system |
| US2278593A (en) * | 1938-03-21 | 1942-04-07 | Fides Gmbh | Telephone system |
-
0
- NL NL67487D patent/NL67487C/xx active
-
1944
- 1944-02-18 GB GB3019/44A patent/GB571811A/en not_active Expired
- 1944-12-08 US US567224A patent/US2442092A/en not_active Expired - Lifetime
-
1946
- 1946-06-13 FR FR929007D patent/FR929007A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2442092A (en) | 1948-05-25 |
| GB571811A (en) | 1945-09-10 |
| FR929007A (fr) | 1947-12-15 |