CH551651ACH378670ACH378670ACH551651ACH 551651 ACH551651 ACH 551651ACH 378670 ACH378670 ACH 378670ACH 378670 ACH378670 ACH 378670ACH 551651 ACH551651 ACH 551651A
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CH
Switzerland
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CH378670A
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Publication of CH551651ApublicationCriticalpatent/CH551651A/xx
G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
G04C3/08—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
G04C3/12—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by piezoelectric means; driven by magneto-strictive means
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Oscillators With Electromechanical Resonators
(AREA)
Apparatuses For Generation Of Mechanical Vibrations
(AREA)
Measurement Of Predetermined Time Intervals
(AREA)