Patent classifications
G
PHYSICS
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G04
HOROLOGY
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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
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17/00
Mechanisms for stabilising frequency
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G04B17/20
Compensation of mechanisms for stabilising frequency
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G04B17/28
for the effect of imbalance of the weights, e.g. tourbillon
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G04B17/285
Tourbillons or carrousels
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