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.)
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 filedfiledCritical
Application grantedgrantedCritical
Publication of FR657434ApublicationCriticalpatent/FR657434A/fr
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B13/00—Burglar, theft or intruder alarms
G08B13/02—Mechanical actuation
G08B13/06—Mechanical actuation by tampering with fastening
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR657434D1928-07-121928-07-12Appareil de sécurité, de protection et de défense contre l'effraction et la violation des habitations
ExpiredFR657434A
(fr)