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Publication of CH1682773A4publicationCriticalpatent/CH1682773A4/xx
G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
G—PHYSICS
G04—HOROLOGY
G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means