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HONORE HENRI MARTINY
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HONORE HENRI MARTINY
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Application filed by HONORE HENRI MARTINYfiledCriticalHONORE HENRI MARTINY
Application grantedgrantedCritical
Publication of FR514379ApublicationCriticalpatent/FR514379A/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
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR514379A1919-06-211919-06-21Dispositif de controle pour circuits électriques
ExpiredFR514379A
(fr)