NL272224A - - Google Patents
Info
- Publication number
- NL272224A NL272224A NL272224DA NL272224A NL 272224 A NL272224 A NL 272224A NL 272224D A NL272224D A NL 272224DA NL 272224 A NL272224 A NL 272224A
- 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)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74078A US3122612A (en) | 1960-12-06 | 1960-12-06 | Communication channel signaling arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL272224A true NL272224A (en:Method) |
Family
ID=22117583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL272224D NL272224A (en:Method) | 1960-12-06 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3122612A (en:Method) |
| BE (1) | BE610840A (en:Method) |
| DE (1) | DE1412699A1 (en:Method) |
| GB (1) | GB998879A (en:Method) |
| NL (1) | NL272224A (en:Method) |
| SE (1) | SE303150B (en:Method) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805288A (en) * | 1953-11-12 | 1957-09-03 | Gen Dynamics Corp | Multi-office telephone system |
| US2915591A (en) * | 1957-08-19 | 1959-12-01 | Gen Dynamics Corp | Telephone system trunk circuit |
| US2976368A (en) * | 1958-11-17 | 1961-03-21 | Bell Telephone Labor Inc | Incoming trunk circuit for in-dialing service |
-
0
- NL NL272224D patent/NL272224A/xx unknown
-
1960
- 1960-12-06 US US74078A patent/US3122612A/en not_active Expired - Lifetime
-
1961
- 1961-11-27 BE BE610840A patent/BE610840A/fr unknown
- 1961-11-29 GB GB42790/61A patent/GB998879A/en not_active Expired
- 1961-11-30 DE DE19611412699 patent/DE1412699A1/de active Pending
- 1961-12-06 SE SE12208/61A patent/SE303150B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE303150B (en:Method) | 1968-08-19 |
| BE610840A (fr) | 1962-03-16 |
| GB998879A (en) | 1965-07-21 |
| DE1412699A1 (de) | 1969-01-30 |
| US3122612A (en) | 1964-02-25 |