CPC Subgroup
G04C 3/06 using electromagnetic coupling between electric power source and balance
Full Title
Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C15/00) > wherein movement is regulated by a balance > using electromagnetic coupling between electric power source and balance
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open