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MANUF D HORLOGERIE CHARVET DEL
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MANUF D HORLOGERIE CHARVET DEL
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Application filed by MANUF D HORLOGERIE CHARVET DELfiledCriticalMANUF D HORLOGERIE CHARVET DEL
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Publication of FR1161952ApublicationCriticalpatent/FR1161952A/fr
G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
G04C3/02—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum
G04C3/027—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum
G04C3/0278—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum the pendulum controlling the gear-train by means of static switches, e.g. transistor circuits
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FR1161952D1956-12-041956-12-04Procédé et dispositif pour assurer la marche et l'entretien du mouvement des régulateurs électriques
ExpiredFR1161952A
(fr)