NL148728B - ALARM SYSTEM. - Google Patents

ALARM SYSTEM.

Info

Publication number
NL148728B
NL148728B NL7018551A NL7018551A NL148728B NL 148728 B NL148728 B NL 148728B NL 7018551 A NL7018551 A NL 7018551A NL 7018551 A NL7018551 A NL 7018551A NL 148728 B NL148728 B NL 148728B
Authority
NL
Netherlands
Prior art keywords
alarm system
alarm
Prior art date
Application number
NL7018551A
Other languages
Dutch (nl)
Other versions
NL7018551A (en
Original Assignee
Ato Inc
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 Ato Inc filed Critical Ato Inc
Priority to NL7018551A priority Critical patent/NL148728B/en
Publication of NL7018551A publication Critical patent/NL7018551A/xx
Publication of NL148728B publication Critical patent/NL148728B/en

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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
NL7018551A 1970-12-21 1970-12-21 ALARM SYSTEM. NL148728B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7018551A NL148728B (en) 1970-12-21 1970-12-21 ALARM SYSTEM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7018551A NL148728B (en) 1970-12-21 1970-12-21 ALARM SYSTEM.

Publications (2)

Publication Number Publication Date
NL7018551A NL7018551A (en) 1972-06-23
NL148728B true NL148728B (en) 1976-02-16

Family

ID=19811851

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7018551A NL148728B (en) 1970-12-21 1970-12-21 ALARM SYSTEM.

Country Status (1)

Country Link
NL (1) NL148728B (en)

Also Published As

Publication number Publication date
NL7018551A (en) 1972-06-23

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