GB8727469D0 - Burglar alarms - Google Patents

Burglar alarms

Info

Publication number
GB8727469D0
GB8727469D0 GB878727469A GB8727469A GB8727469D0 GB 8727469 D0 GB8727469 D0 GB 8727469D0 GB 878727469 A GB878727469 A GB 878727469A GB 8727469 A GB8727469 A GB 8727469A GB 8727469 D0 GB8727469 D0 GB 8727469D0
Authority
GB
United Kingdom
Prior art keywords
burglar alarms
burglar
alarms
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.)
Withdrawn
Application number
GB878727469A
Other versions
GB2212959A (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8727469A priority Critical patent/GB2212959A/en
Publication of GB8727469D0 publication Critical patent/GB8727469D0/en
Publication of GB2212959A publication Critical patent/GB2212959A/en
Withdrawn legal-status Critical Current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
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
GB8727469A 1987-11-24 1987-11-24 Burglar alarm Withdrawn GB2212959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8727469A GB2212959A (en) 1987-11-24 1987-11-24 Burglar alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8727469A GB2212959A (en) 1987-11-24 1987-11-24 Burglar alarm

Publications (2)

Publication Number Publication Date
GB8727469D0 true GB8727469D0 (en) 1987-12-23
GB2212959A GB2212959A (en) 1989-08-02

Family

ID=10627445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8727469A Withdrawn GB2212959A (en) 1987-11-24 1987-11-24 Burglar alarm

Country Status (1)

Country Link
GB (1) GB2212959A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2405511B (en) * 2003-08-22 2006-08-02 Michael Gilber Chetwynd-Talbot Door alarm, doorway and use of the alarm

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973250A (en) * 1974-11-12 1976-08-03 Uffelman Malcolm R Acoustically coupled burglar alarm system
US4209777A (en) * 1978-04-04 1980-06-24 Teledyne Industries, Inc. Non-compromisable intrusion sensor circuit
US4191947A (en) * 1978-09-06 1980-03-04 Gte Sylvania Incorporated Intrusion alarm system

Also Published As

Publication number Publication date
GB2212959A (en) 1989-08-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)