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SEPMIS
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SEPMIS
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Priority to FR7438399ApriorityCriticalpatent/FR2292293A1/fr
Publication of FR2292293A1publicationCriticalpatent/FR2292293A1/fr
Application grantedgrantedCritical
Publication of FR2292293B3publicationCriticalpatent/FR2292293B3/fr
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
G08B29/02—Monitoring continuously signalling or alarm systems
G08B29/04—Monitoring of the detection circuits
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Engineering & Computer Science
(AREA)
Computer Security & Cryptography
(AREA)
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Burglar Alarm Systems
(AREA)
Selective Calling Equipment
(AREA)
FR7438399A1974-11-221974-11-22Systeme de detection ou de surveillance a distance dont la ligne de raccordement est munie d'un dispositif permettant d'en controler le bon etat de fonctionnement
GrantedFR2292293A1
(fr)
Systeme de detection ou de surveillance a distance dont la ligne de raccordement est munie d'un dispositif permettant d'en controler le bon etat de fonctionnement
Systeme de detection ou de surveillance a distance dont la ligne de raccordement est munie d'un dispositif permettant d'en controler le bon etat de fonctionnement
Systeme de detection ou de surveillance a distance dont la ligne de raccordement est munie d'un dispositif permettant d'en controler le bon etat de fonctionnement
