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 Fichet BauchefiledCriticalFichet Bauche
Publication of BE776284ApublicationCriticalpatent/BE776284A/fr
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
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
BE776284A1970-12-091971-12-06Dispositif pour la protection contre le vol des billets de banque ranges dans des casiers ou analogue
BE776284A
(fr)