CH250532A - Anordnung in einer Wechselsprechanlage für lautstarken Verkehr. - Google Patents
Anordnung in einer Wechselsprechanlage für lautstarken Verkehr.Info
- Publication number
- CH250532A CH250532A CH250532DA CH250532A CH 250532 A CH250532 A CH 250532A CH 250532D A CH250532D A CH 250532DA CH 250532 A CH250532 A CH 250532A
- Authority
- CH
- Switzerland
- Prior art keywords
- intercom
- arrangement
- noisy
- traffic
- noisy traffic
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH599406X | 1944-10-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH250532A true CH250532A (de) | 1947-08-31 |
Family
ID=4522654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH250532D CH250532A (de) | 1944-10-21 | 1944-10-21 | Anordnung in einer Wechselsprechanlage für lautstarken Verkehr. |
Country Status (3)
Country | Link |
---|---|
US (1) | US2424069A (de) |
CH (1) | CH250532A (de) |
GB (1) | GB599406A (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126448A (en) * | 1964-03-24 | Station | ||
US2543807A (en) * | 1946-03-28 | 1951-03-06 | Atf Inc | Voice operated relay |
FR1005063A (fr) * | 1947-05-29 | 1952-04-07 | Dispositif pour éviter l'effet larsen dans les installations téléphoniques à hautparleur | |
FR1005064A (fr) * | 1947-05-29 | 1952-04-07 | Perfectionnements aux installations téléphoniques en haut-parleur à voie unique | |
US2694749A (en) * | 1950-04-18 | 1954-11-16 | Sepco 45 B D Sebastopol | Communication system |
US2802055A (en) * | 1952-08-29 | 1957-08-06 | Siemens Ag | Two-way loudspeaker intercommunication system |
US2883456A (en) * | 1953-04-29 | 1959-04-21 | Int Standard Electric Corp | Circuit arrangement for intercommunication systems |
US2819340A (en) * | 1953-11-17 | 1958-01-07 | Stanley S Brody | Voice operated intercommunication system |
US2951123A (en) * | 1954-03-19 | 1960-08-30 | Vito Michael Frank De | Voice activated intercommunication system |
US3189690A (en) * | 1960-04-27 | 1965-06-15 | Modern Telephones Great Britai | Two-way telephone systems with talk-listen switching |
US3897592A (en) * | 1973-05-11 | 1975-07-29 | Billy E Walker | Voice-operated transmit system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR789510A (fr) * | 1933-12-30 | 1935-10-30 | Le Telephone Prive Nat | Perfectionnements à la téléphonie |
GB522457A (en) * | 1938-12-02 | 1940-06-18 | Marcello Creti | Improvements in or relating to systems of simultaneous telephony on a number of lines |
-
1944
- 1944-10-21 CH CH250532D patent/CH250532A/de unknown
-
1945
- 1945-07-16 US US605402A patent/US2424069A/en not_active Expired - Lifetime
- 1945-09-18 GB GB24109/45A patent/GB599406A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2424069A (en) | 1947-07-15 |
GB599406A (en) | 1948-03-11 |
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