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Application filed by Georg HummelfiledCriticalGeorg Hummel
Publication of CH20860ApublicationCriticalpatent/CH20860A/de
G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
G04C3/16—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor
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Physics & Mathematics
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General Physics & Mathematics
(AREA)
CH20860A1900-01-041900-01-04Uhr mit elektrischem Betrieb
CH20860A
(de)