electrically operated

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 > electrically operated

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

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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G10K 9/121 CPC only CPC only
G10K 9/122 using piezoelectric driving means since 1995 IPC+CPC Available in IPC and CPC
G10K 9/128 using magnetostrictive driving means since 1995 IPC+CPC Available in IPC and CPC
G10K 9/13 using electromagnetic driving means since 1980 IPC+CPC Available in IPC and CPC
G10K 9/16 with means for generating current by muscle power IPC+CPC Available in IPC and CPC