GB1231115A - - Google Patents

Info

Publication number
GB1231115A
GB1231115A GB1231115DA GB1231115A GB 1231115 A GB1231115 A GB 1231115A GB 1231115D A GB1231115D A GB 1231115DA GB 1231115 A GB1231115 A GB 1231115A
Authority
GB
United Kingdom
Prior art keywords
alarm
lighting
line
releasing
pulses
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
English (en)
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
Publication of GB1231115A publication Critical patent/GB1231115A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00Alarms responsive to unspecified undesired or abnormal conditions

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
GB1231115D 1969-02-18 1969-02-18 Expired GB1231115A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB882369 1969-02-18

Publications (1)

Publication Number Publication Date
GB1231115A true GB1231115A (https=) 1971-05-12

Family

ID=9859915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231115D Expired GB1231115A (https=) 1969-02-18 1969-02-18

Country Status (1)

Country Link
GB (1) GB1231115A (https=)

Similar Documents

Publication Publication Date Title
GB1412164A (en) Ionization-type fire sensor
US2909767A (en) Bank holdup deterrent systems
GB1270682A (en) Improvements in or relating to intruder alarm systems
GB1231115A (https=)
GB1351748A (en) Electric alarm systems
GB1280298A (en) Improvements in and relating to combustion detectors
GB1418068A (en) Alarm system
GB1159964A (en) Improvements relating to Audible Alarm Systems
GB1488753A (en) Illumination of premises
GB1441618A (en) Alarm systems
GB1257430A (https=)
JPS5330898A (en) Display system
GB1138115A (en) Controlling system using modulated light
GB1374418A (en) Fire detection systems and apparatus
CH556670A (fr) Installation fixe d'extinction automatique de feu.
GB1253196A (https=)
GB1422394A (en) Warning systems
GB679103A (en) Visual and audible electric alarm signals
GB1316518A (en) Selectively controlled alarm
GB1259580A (https=)
GB643867A (en) Smoke detector and signal
GB1175321A (en) Improvements in or relating to Warning Devices.
GB1414982A (en) Device responsive to the opening of a door
GB1160496A (en) A Photosensitively Triggered Sound Producing Apparatus.
GB1164978A (en) Constant Surveillance Alarm System.

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees