FR1054309A - Alarm device by phone call - Google Patents

Alarm device by phone call

Info

Publication number
FR1054309A
FR1054309A FR1054309DA FR1054309A FR 1054309 A FR1054309 A FR 1054309A FR 1054309D A FR1054309D A FR 1054309DA FR 1054309 A FR1054309 A FR 1054309A
Authority
FR
France
Prior art keywords
alarm device
phone call
call
phone
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
Emmanuel Cyrinski
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 FR1054309A publication Critical patent/FR1054309A/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)
FR1054309D 1952-01-05 1952-01-05 Alarm device by phone call Expired FR1054309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1054309T 1952-01-05

Publications (1)

Publication Number Publication Date
FR1054309A true FR1054309A (en) 1954-02-09

Family

ID=9596347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1054309D Expired FR1054309A (en) 1952-01-05 1952-01-05 Alarm device by phone call

Country Status (1)

Country Link
FR (1) FR1054309A (en)

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