G04C13/04 - CPC Classification

Driving mechanisms for clocks by master-clocks; Circuit arrangements; Electric clock installations Master-clocks

• G04C13/0409 » {monitoring or controlling master-clock or system with more than one master-clock, e.g. for switching-over to standby motor or power system} 1
• G04C13/0436 » {provided with supplementary means for setting or changing the time indication of the slave-clocks} 0
• G04C13/0463 » {Arrangements for generating normal driving pulses} 0
• G04C13/06 » Contact devices 0