DIFF Subgroup
G10K 9/125 with a plurality of active elements
Introduced: January 1995
Full Title
Full titles differ between systems:
IPC:
Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers > electrically operated > using piezoelectric driving means > with a plurality of active elements
CPC:
Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers (loudspeakers or like acoustic electromechanical transducers H04R) > electrically operated > using piezoelectric driving means > with a plurality of active elements
No child classifications to compare. This is a leaf node in both IPC and CPC.