IPIQ

PHYSICS

G04

HOROLOGY

G04B

MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS

1/00

Driving mechanisms

G04B1/10

with mainspring

G04B1/22

Compensation of changes in the motive power of the mainspring