CH263429A - Hausfernsprechanlage. - Google Patents

Hausfernsprechanlage.

Info

Publication number
CH263429A
CH263429A CH263429DA CH263429A CH 263429 A CH263429 A CH 263429A CH 263429D A CH263429D A CH 263429DA CH 263429 A CH263429 A CH 263429A
Authority
CH
Switzerland
Prior art keywords
house intercom
intercom
house
Prior art date
Application number
Other languages
English (en)
Inventor
Bertil Legerth Karl Ingemar
Original Assignee
Bertil Legerth Karl Ingemar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bertil Legerth Karl Ingemar filed Critical Bertil Legerth Karl Ingemar
Publication of CH263429A publication Critical patent/CH263429A/de

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)
CH263429D 1946-01-24 1947-01-17 Hausfernsprechanlage. CH263429A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE263429X 1946-01-24

Publications (1)

Publication Number Publication Date
CH263429A true CH263429A (de) 1949-08-31

Family

ID=20306518

Family Applications (1)

Application Number Title Priority Date Filing Date
CH263429D CH263429A (de) 1946-01-24 1947-01-17 Hausfernsprechanlage.

Country Status (4)

Country Link
US (1) US2512834A (de)
CH (1) CH263429A (de)
DE (1) DE846563C (de)
GB (1) GB647765A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744966A (en) * 1950-10-05 1956-05-08 Executone Inf Sys Inc Intercommunication system
US2741667A (en) * 1953-02-11 1956-04-10 Commercial Radio Sound Corp Privacy guarded telephone intercommunicating system
US3130272A (en) * 1958-10-17 1964-04-21 Talk A Phone Co Intercommunication system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1356256A (en) * 1918-08-19 1920-10-19 Western Electric Co Telephone system
US1647606A (en) * 1925-11-28 1927-11-01 J S Timmons Inc Intercommunication system
US2036023A (en) * 1933-06-09 1936-03-31 Bell Telephone Labor Inc Telephone system
US2054933A (en) * 1934-01-08 1936-09-22 John A Frazier Return speech control
US2110358A (en) * 1936-06-06 1938-03-08 Electro Acoustic Products Comp System for sound reproducing apparatus
US2200814A (en) * 1936-08-31 1940-05-14 Siemens Ag Telephone system
US2269142A (en) * 1940-06-28 1942-01-06 Webster Electric Co Inc Communication system
US2269143A (en) * 1940-06-28 1942-01-06 Webster Electric Co Inc Communication system
US2347080A (en) * 1942-12-14 1944-04-18 Webster Electric Co Inc Communication system

Also Published As

Publication number Publication date
US2512834A (en) 1950-06-27
GB647765A (en) 1950-12-20
DE846563C (de) 1952-08-14

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