NL267227A - - Google Patents
Info
- Publication number
- NL267227A NL267227A NL267227DA NL267227A NL 267227 A NL267227 A NL 267227A NL 267227D A NL267227D A NL 267227DA NL 267227 A NL267227 A NL 267227A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/026—Arrangements for interrupting the ringing current
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST16703A DE1122585B (de) | 1960-07-21 | 1960-07-21 | Schaltungsanordnung zur Abschaltung des Rufstromes beim Melden einer Teilnehmerstelle in Fernsprechanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL267227A true NL267227A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=7457180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL267227D NL267227A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1960-07-21 |
Country Status (5)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE340297B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1970-03-19 | 1971-11-15 | Ericsson Telefon Ab L M | |
| US3730999A (en) * | 1971-10-26 | 1973-05-01 | Stromberg Carlson Corp | Telephone ring-trip circuit |
| US3839603A (en) * | 1972-05-22 | 1974-10-01 | Stromberg Carlson Corp | Ring trip circuit employing a parallel-t filter network |
| FR2193529A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-07-20 | 1974-02-15 | Jeumont Schneider | |
| JPS54724B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-10-25 | 1979-01-16 | ||
| JPS51134506A (en) * | 1975-05-16 | 1976-11-22 | Nec Corp | Subscriber's circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2189769A (en) * | 1938-05-04 | 1940-02-13 | Bell Telephone Labor Inc | Telephone signaling system |
| US2421148A (en) * | 1942-06-12 | 1947-05-27 | Automatic Elect Lab | Electromagnetic relay circuit |
| BE554822A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1956-02-09 |
-
0
- NL NL267227D patent/NL267227A/xx unknown
-
1960
- 1960-07-21 DE DEST16703A patent/DE1122585B/de active Pending
-
1961
- 1961-07-13 BE BE606072A patent/BE606072A/nl unknown
- 1961-07-17 CH CH839461A patent/CH387107A/de unknown
- 1961-07-19 US US125231A patent/US3187106A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1122585B (de) | 1962-01-25 |
| CH387107A (de) | 1965-01-31 |
| US3187106A (en) | 1965-06-01 |
| BE606072A (nl) | 1962-01-15 |