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PCE
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DIFF Subgroup
H04R 17/04

Gramophone pick-ups using a stylus; Recorders using a stylus

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Piezoelectric transducers; Electrostrictive transducers > Gramophone pick-ups using a stylus; Recorders using a stylus

CPC:

Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners ) > Gramophone pick-ups using a stylus; Recorders using a stylus

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • H04R 17/06 comprising two or more styli or transducers (H04R17/08 takes precedence) IPC+CPC Available in IPC and CPC
  • H04R 17/08 signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously IPC+CPC Available in IPC and CPC