DIFF Subgroup
G10K 9/20 Sounding members
Introduced: September 1968
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 > Details, e.g. bulbs, pumps, pistons, switches or casings > Sounding members
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) > Details, e.g. bulbs, pumps, pistons, switches or casings > Sounding members
No child classifications to compare. This is a leaf node in both IPC and CPC.