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Sadir Carpentier SA
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Sadir Carpentier SA
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Application filed by Sadir Carpentier SAfiledCriticalSadir Carpentier SA
Application grantedgrantedCritical
Publication of FR61122EpublicationCriticalpatent/FR61122E/fr
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B7/00—Signalling systems according to two or more of groups G08B3/00 - G08B6/00
G08B7/06—Signalling systems according to two or more of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR61122D1950-12-201950-12-20Système de commande de relais
ExpiredFR61122E
(fr)