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PCE
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DIFF Subgroup
G04F 1/02

by consuming prefixed quantities of materials, e.g. by burning candle

Introduced: September 1968

Full Title

Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers > by consuming prefixed quantities of materials, e.g. by burning candle

No child classifications to compare. This is a leaf node in both IPC and CPC.