using a mechanical oscillator

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Apparatus for measuring unknown time intervals by non-electric means > using a mechanical oscillator

CPC:

Apparatus for measuring unknown time intervals by non-electric means (using fluidic means G04F13/06) > using a mechanical oscillator

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

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G04F 7/06 running only during the time interval to be measured, e.g. stopwatches +2 CPC IPC+CPC Available in IPC and CPC
G04F 7/08 Watches or clocks with stop devices, e.g. chronograph +4 CPC IPC+CPC Available in IPC and CPC