NL272641A - - Google Patents
Info
- Publication number
- NL272641A NL272641A NL272641DA NL272641A NL 272641 A NL272641 A NL 272641A NL 272641D A NL272641D A NL 272641DA NL 272641 A NL272641 A NL 272641A
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US77990A US3179750A (en) | 1960-12-23 | 1960-12-23 | Pbx in-dialing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL272641A true NL272641A (https=) |
Family
ID=22141204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL272641D NL272641A (https=) | 1960-12-23 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3179750A (https=) |
| BE (1) | BE611908A (https=) |
| DE (1) | DE1171963B (https=) |
| GB (1) | GB997229A (https=) |
| NL (1) | NL272641A (https=) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798379A (en) * | 1971-09-22 | 1974-03-19 | Tel Ind Inc | Connector terminal dial repulser |
| US3790719A (en) * | 1971-10-28 | 1974-02-05 | Bell Canada | Method and means for connecting branch exchanges |
| US4209032A (en) * | 1978-05-22 | 1980-06-24 | Mordeki Drori | Air-relief valves |
| US4783796A (en) * | 1982-09-28 | 1988-11-08 | Opcom | PBX telephone call control system |
| US4975941A (en) * | 1984-03-26 | 1990-12-04 | Dytel Corporation | Call processor for facilitating call completions |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1793761A (en) * | 1925-07-01 | 1931-02-24 | Tilden Robbins | Telephone-call recorder |
| US2691063A (en) * | 1950-03-14 | 1954-10-05 | Luigi Sbrana | Telephone recording system |
| US2791633A (en) * | 1955-06-27 | 1957-05-07 | Dictaphone Corp | Remote dictation system |
-
0
- NL NL272641D patent/NL272641A/xx unknown
-
1960
- 1960-12-23 US US77990A patent/US3179750A/en not_active Expired - Lifetime
-
1961
- 1961-12-21 GB GB45788/61A patent/GB997229A/en not_active Expired
- 1961-12-22 BE BE611908A patent/BE611908A/fr unknown
- 1961-12-22 DE DEW31345A patent/DE1171963B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB997229A (en) | 1965-07-07 |
| BE611908A (fr) | 1962-04-16 |
| US3179750A (en) | 1965-04-20 |
| DE1171963B (de) | 1964-06-11 |