DIFF Subgroup
G04C 3/06 using electromagnetic coupling between electric power source and balance
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
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 balance > using electromagnetic coupling between electric power source and balance
CPC:
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
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open