FR390731A - Procédé et dispositif pour entretenir automatiquement et électriquement le mouvement oscillant des pendules ou d'un système oscillant quelconque
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Procédé et dispositif pour entretenir automatiquement et électriquement le mouvement oscillant des pendules ou d'un système oscillant quelconque
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Lepaute Henry S Ets
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Lepaute Henry S Ets
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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
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FR390731A1908-04-151908-04-15Procédé et dispositif pour entretenir automatiquement et électriquement le mouvement oscillant des pendules ou d'un système oscillant quelconque
ExpiredFR390731A
(fr)