NL259217A - - Google Patents
Info
- Publication number
- NL259217A NL259217A NL259217A NL259217A NL259217A NL 259217 A NL259217 A NL 259217A NL 259217 A NL259217 A NL 259217A NL 259217 A NL259217 A NL 259217A NL 259217 A NL259217 A NL 259217A
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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)
- Telephonic Communication Services (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE277560 | 1960-03-19 | ||
| US69376A US3138668A (en) | 1960-03-19 | 1960-11-15 | Circuit arrangement for signalling through telephone lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL259217A true NL259217A (en:Method) | 1964-04-27 |
Family
ID=26654381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL259217A NL259217A (en:Method) | 1960-03-19 | 1960-12-19 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3138668A (en:Method) |
| BE (1) | BE599895A (en:Method) |
| DE (1) | DE1192270B (en:Method) |
| DK (1) | DK95086C (en:Method) |
| GB (1) | GB970273A (en:Method) |
| NL (1) | NL259217A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1220489B (de) * | 1964-03-17 | 1966-07-07 | Siemens Ag | Schaltungsanordnung fuer wechselseitig betriebene Zweidraht-Fernmelde-, insbesondereFernsprechleitungen |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE863093C (de) * | 1942-01-21 | 1953-01-15 | Normalzeit G M B H | Schaltungsanordnung fuer Fernmeldeanlagen mit Stoerungssignalisierung |
| US2409164A (en) * | 1942-11-10 | 1946-10-08 | Automatic Elect Lab | Telephone system |
| DE817311C (de) * | 1949-03-05 | 1951-10-18 | Siemens & Halske A G | Schaltanordnung zur Vermeidung von Fehlschaltungen durch gegenlaeufige Impulse |
| DE912940C (de) * | 1951-04-28 | 1954-09-06 | Siemens Ag | Schaltungsanordnung fuer Fernsprechanlagen mit zweiadrigen Verbindungsleitungen |
-
1960
- 1960-11-15 US US69376A patent/US3138668A/en not_active Expired - Lifetime
- 1960-12-02 DE DET19376A patent/DE1192270B/de active Pending
- 1960-12-19 NL NL259217A patent/NL259217A/xx unknown
-
1961
- 1961-01-04 DK DK3961AA patent/DK95086C/da active
- 1961-02-06 BE BE599895A patent/BE599895A/fr unknown
- 1961-03-20 GB GB10156/61A patent/GB970273A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3138668A (en) | 1964-06-23 |
| DK95086C (da) | 1963-01-07 |
| GB970273A (en) | 1964-09-16 |
| DE1192270B (de) | 1965-05-06 |
| BE599895A (fr) | 1961-05-29 |