FR1375077A - Electrical protection device - Google Patents

Electrical protection device

Info

Publication number
FR1375077A
FR1375077A FR940944A FR940944A FR1375077A FR 1375077 A FR1375077 A FR 1375077A FR 940944 A FR940944 A FR 940944A FR 940944 A FR940944 A FR 940944A FR 1375077 A FR1375077 A FR 1375077A
Authority
FR
France
Prior art keywords
protection device
electrical protection
electrical
protection
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
FR940944A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American District Telegraph Co
Original Assignee
American District Telegraph Co
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 American District Telegraph Co filed Critical American District Telegraph Co
Priority to FR940944A priority Critical patent/FR1375077A/en
Application granted granted Critical
Publication of FR1375077A publication Critical patent/FR1375077A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR940944A 1963-07-10 1963-07-10 Electrical protection device Expired FR1375077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR940944A FR1375077A (en) 1963-07-10 1963-07-10 Electrical protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR940944A FR1375077A (en) 1963-07-10 1963-07-10 Electrical protection device

Publications (1)

Publication Number Publication Date
FR1375077A true FR1375077A (en) 1964-10-16

Family

ID=8807964

Family Applications (1)

Application Number Title Priority Date Filing Date
FR940944A Expired FR1375077A (en) 1963-07-10 1963-07-10 Electrical protection device

Country Status (1)

Country Link
FR (1) FR1375077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008549A1 (en) * 1978-08-09 1980-03-05 LA DETECTION ELECTRONIQUE FRANCAISE PROTECBAT Société dite: Arrangement for the detection of fire at first outbreak

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008549A1 (en) * 1978-08-09 1980-03-05 LA DETECTION ELECTRONIQUE FRANCAISE PROTECBAT Société dite: Arrangement for the detection of fire at first outbreak
FR2433210A1 (en) * 1978-08-09 1980-03-07 Lecuyer Daniel INSTALLATION FOR DETECTING FIRES FROM THEIR APPEARANCE

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