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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
G04B17/00—Mechanisms for stabilising frequency
G04B17/20—Compensation of mechanisms for stabilising frequency
G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
G04B17/227—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature composition and manufacture of the material used
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FR439860D1911-02-201912-02-07Spiral à force élastique croissant avec l'élévation de température et à haute limite d'élasticité
ExpiredFR439860A
(fr)