F03G 1/022 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

F03G 1/022

Full Title

Spring motors (spring-driven toys A63H; springs in general F16F; precision time mechanisms, e.g. for clocks or watches, G04B) > characterised by shape or material of spring, e.g. helical, spiral, coil

This code exists only in CPC.

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