DIFF Subgroup
G10K 9/04 by compressed gases, e.g. compressed air
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 > driven by gas, e.g. suction operated > by compressed gases, e.g. compressed air
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) > driven by gas; e.g. suction operated > by compressed gases, e.g. compressed air
No child classifications to compare. This is a leaf node in both IPC and CPC.