BE613770A - Système téléphonique de campagne. - Google Patents
Système téléphonique de campagne.Info
- Publication number
- BE613770A BE613770A BE613770A BE613770A BE613770A BE 613770 A BE613770 A BE 613770A BE 613770 A BE613770 A BE 613770A BE 613770 A BE613770 A BE 613770A BE 613770 A BE613770 A BE 613770A
- Authority
- BE
- Belgium
- Prior art keywords
- telephone system
- campaign telephone
- campaign
- telephone
- Prior art date
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
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Mobile Radio Communication Systems (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL288870D NL288870A (fr) | 1962-02-12 | ||
BE613770A BE613770A (fr) | 1962-02-12 | 1962-02-12 | Système téléphonique de campagne. |
US255051A US3264412A (en) | 1962-02-12 | 1963-01-30 | Field telephone system |
DE19631437401 DE1437401A1 (de) | 1962-02-12 | 1963-02-08 | Schaltungsanordnung fuer Rufumsetzer in Fernsprechvermittlungsanlagen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE613770A BE613770A (fr) | 1962-02-12 | 1962-02-12 | Système téléphonique de campagne. |
Publications (1)
Publication Number | Publication Date |
---|---|
BE613770A true BE613770A (fr) | 1962-08-13 |
Family
ID=3845323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE613770A BE613770A (fr) | 1962-02-12 | 1962-02-12 | Système téléphonique de campagne. |
Country Status (4)
Country | Link |
---|---|
US (1) | US3264412A (fr) |
BE (1) | BE613770A (fr) |
DE (1) | DE1437401A1 (fr) |
NL (1) | NL288870A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4001515A (en) * | 1974-11-21 | 1977-01-04 | Astreon Corporation | Interfacing unit for telephone networks |
IT1143632B (it) * | 1977-01-24 | 1986-10-22 | Sits Soc It Telecom Siemens | Circuito rivelatore di chiamata acustica,specialmente per apparecchi telefonici |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2299257A (en) * | 1941-07-09 | 1942-10-20 | Simon Harry | Telephone dial mask |
GB641888A (en) * | 1947-02-07 | 1950-08-23 | Standard Telephones Cables Ltd | Improvements in or relating to electric signalling systems |
US2590804A (en) * | 1949-12-22 | 1952-03-25 | Anthony S Vitale | Battery casing |
US2707211A (en) * | 1951-03-30 | 1955-04-26 | Itt | Adapter circuit |
US2700695A (en) * | 1953-12-10 | 1955-01-25 | Herbert A Gottschall | Plastic battery case |
US2834837A (en) * | 1954-12-08 | 1958-05-13 | North Electric Co | Dust cover of silencing material for telephone dial mechanism |
US2951910A (en) * | 1958-01-14 | 1960-09-06 | North Electric Co | Substation signalling device |
US2949507A (en) * | 1959-05-14 | 1960-08-16 | Bell Telephone Labor Inc | Electrical information system |
US3156775A (en) * | 1959-12-02 | 1964-11-10 | Itt | Telephone converter |
-
0
- NL NL288870D patent/NL288870A/xx unknown
-
1962
- 1962-02-12 BE BE613770A patent/BE613770A/fr unknown
-
1963
- 1963-01-30 US US255051A patent/US3264412A/en not_active Expired - Lifetime
- 1963-02-08 DE DE19631437401 patent/DE1437401A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1437401A1 (de) | 1968-10-24 |
NL288870A (fr) | |
US3264412A (en) | 1966-08-02 |
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