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Priority to AU63628/73ApriorityCriticalpatent/AU480028B2/en
Priority claimed from AU63628/73Aexternal-prioritypatent/AU480028B2/en
Application grantedgrantedCritical
Publication of AU480028ApublicationCriticalpatent/AU480028A/xx
Publication of AU480028B2publicationCriticalpatent/AU480028B2/en
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
G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
AU63628/73A1973-12-14Improvements in or relating to x-ray contrast detection system
ExpiredAU480028B2
(en)