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PCE
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DIFF Subgroup
G01R 9/04

using vibrating reeds, e.g. for measuring frequency

Introduced: September 1968

Full Title

Instruments employing mechanical resonance > using vibrating reeds, e.g. for measuring frequency

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

Child Classifications

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  • G01R 9/06 magnetically driven IPC+CPC Available in IPC and CPC
  • G01R 9/08 piezoelectrically driven IPC+CPC Available in IPC and CPC