BE426001A - - Google Patents

Info

Publication number
BE426001A
BE426001A BE426001DA BE426001A BE 426001 A BE426001 A BE 426001A BE 426001D A BE426001D A BE 426001DA BE 426001 A BE426001 A BE 426001A
Authority
BE
Belgium
Application number
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.)
Publication of BE426001A publication Critical patent/BE426001A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H04M11/045Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Fire Alarms (AREA)
  • Electromechanical Clocks (AREA)
BE426001D 1937-02-15 BE426001A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB206325X 1937-02-15

Publications (1)

Publication Number Publication Date
BE426001A true BE426001A (en:Method)

Family

ID=10149136

Family Applications (1)

Application Number Title Priority Date Filing Date
BE426001D BE426001A (en:Method) 1937-02-15

Country Status (6)

Country Link
US (1) US2191971A (en:Method)
BE (1) BE426001A (en:Method)
CH (1) CH206325A (en:Method)
FR (1) FR832629A (en:Method)
GB (1) GB492161A (en:Method)
NL (1) NL61918C (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB589160A (en) * 1945-03-15 1947-06-12 Alfred Samuel Horace Picking Improvements in or relating to automatic alarm systems
FR956829A (en:Method) * 1946-09-03 1950-02-08
US2555714A (en) * 1950-01-24 1951-06-05 H S Brimm Alarm system
US2804501A (en) * 1955-09-26 1957-08-27 Boeing Co Voice warning systems

Also Published As

Publication number Publication date
US2191971A (en) 1940-02-27
CH206325A (de) 1939-07-31
FR832629A (fr) 1938-09-29
NL61918C (en:Method)
GB492161A (en) 1938-09-15

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