This sub-class includes electric features of mechanically-driven clocks or watches, such as electric winding of such clocks or the provision of electric contacts thereon.
electronic time-pieces with no moving parts (electronic time-pieces with moving parts are covered by sub-class Fulltext... Hierarchy... Expanded...G04C); [3]
electronic circuitry for producing timing pulses irrespective of the nature of the time-indicating means utilised. [3]