FR1022547A - Alarm device - Google Patents

Alarm device

Info

Publication number
FR1022547A
FR1022547A FR1022547DA FR1022547A FR 1022547 A FR1022547 A FR 1022547A FR 1022547D A FR1022547D A FR 1022547DA FR 1022547 A FR1022547 A FR 1022547A
Authority
FR
France
Prior art keywords
alarm device
alarm
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Guy Petit-Guenot
Yves Taron
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 filed Critical
Application granted granted Critical
Publication of FR1022547A publication Critical patent/FR1022547A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H04M11/045—Telephonic 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)
FR1022547D 1949-07-26 1950-07-26 Alarm device Expired FR1022547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1022547X 1949-07-26

Publications (1)

Publication Number Publication Date
FR1022547A true FR1022547A (en) 1953-03-05

Family

ID=4553136

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1022547D Expired FR1022547A (en) 1949-07-26 1950-07-26 Alarm device

Country Status (1)

Country Link
FR (1) FR1022547A (en)

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