Details

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators > Details

CPC:

Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (electro-acoustic transducers such as loudspeakers, microphones or gramophone pick-ups H04R; piezoelectric, electrostrictive or magnetostrictive devices with mechanical input or output, e.g. actuators or sensors, H10N30/00, H10N35/00) > Details

CPC subdivides this area 5x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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H03H 2009/02165 2nd only +1 CPC CPC only CPC only
H03H 9/02007 +5 CPC CPC only CPC only
H03H 9/0222 CPC only CPC only
H03H 9/02228 CPC only CPC only
H03H 9/02236 CPC only CPC only
H03H 9/02244 +7 CPC CPC only CPC only
H03H 9/02535 +7 CPC CPC only CPC only
H03H 9/05 Holders or supports since 1980 +4 CPC IPC+CPC Available in IPC and CPC
H03H 9/125 Driving means, e.g. electrodes, coils since 1980 IPC+CPC Available in IPC and CPC