NL6918293A - - Google Patents
Info
- Publication number
- NL6918293A NL6918293A NL6918293A NL6918293A NL6918293A NL 6918293 A NL6918293 A NL 6918293A NL 6918293 A NL6918293 A NL 6918293A NL 6918293 A NL6918293 A NL 6918293A NL 6918293 A NL6918293 A NL 6918293A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681813347 DE1813347A1 (de) | 1968-12-07 | 1968-12-07 | Schaltungsanordnung zur Erkennung des Schleifenschlusses bei Teilnehmerstellen mit ueber die Anschlussleitung gespeisten Halbleiterverstaerkern in Fernmelde-,insbesondere Fernsprechvermittlungsanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6918293A true NL6918293A (xx) | 1970-06-09 |
Family
ID=5715567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6918293A NL6918293A (xx) | 1968-12-07 | 1969-12-04 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3671679A (xx) |
| CH (1) | CH501346A (xx) |
| DE (1) | DE1813347A1 (xx) |
| ES (1) | ES374345A1 (xx) |
| GB (1) | GB1241079A (xx) |
| NL (1) | NL6918293A (xx) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8103419A (nl) * | 1981-04-01 | 1982-11-01 | Philips Nv | Lijntestcircuit voor een abonneetelefoontoestel. |
| US5111502A (en) * | 1990-04-25 | 1992-05-05 | Command Communications, Inc. | Telephone line bridging sensor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046353A (en) * | 1956-11-10 | 1962-07-24 | Autophon Ag | Telephone sub-station including microphone amplifier |
| CH345671A (de) * | 1956-11-19 | 1960-04-15 | Autophon Ag | Telephonteilnehmerstation mit einem zur Anrufsignalisierung dienenden elektroakustischen Wandler |
| DE1131754B (de) * | 1961-04-26 | 1962-06-20 | Merk Ag Telefonbau Friedrich | Schaltungsanordnung fuer Fernsprechanlagen mit den Teilnehmerapparaten zugeordneten Verstaerkern |
| DE1462245A1 (de) * | 1965-11-13 | 1969-01-30 | Standard Elek K Lorenz Ag | Schaltungsanordnung fuer einen Fernsprechapparat mit elektrodynamischer Hoerkapsel |
| US3626101A (en) * | 1969-06-02 | 1971-12-07 | San Bar Electronics Corp | Loop extender for subscribers connected to a central office by abnormally long telephone lines |
-
1968
- 1968-12-07 DE DE19681813347 patent/DE1813347A1/de active Pending
-
1969
- 1969-11-18 US US877806A patent/US3671679A/en not_active Expired - Lifetime
- 1969-12-03 CH CH1799169A patent/CH501346A/de not_active IP Right Cessation
- 1969-12-04 NL NL6918293A patent/NL6918293A/xx unknown
- 1969-12-04 GB GB59275/69A patent/GB1241079A/en not_active Expired
- 1969-12-06 ES ES374345A patent/ES374345A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH501346A (de) | 1970-12-31 |
| DE1813347A1 (de) | 1970-06-25 |
| US3671679A (en) | 1972-06-20 |
| GB1241079A (en) | 1971-07-28 |
| ES374345A1 (es) | 1971-12-16 |