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HENRI LAMBIN
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HENRI LAMBIN
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Application filed by HENRI LAMBINfiledCriticalHENRI LAMBIN
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Publication of FR449847ApublicationCriticalpatent/FR449847A/fr
G04C21/00—Producing acoustic time signals by electrical means
G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
G04C21/22—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm put into action by the arbor of a mechanical alarm work
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Physics & Mathematics
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General Physics & Mathematics
(AREA)
FR449847D1912-10-251912-10-25Dispositif pour l'adaptation d'une sonnerie électrique à tout réveille-matin
ExpiredFR449847A
(fr)