FR505231A - Groupe de ressorts en hélice associés à un solide oscillant de manière à exercer un couple pur, dont le plan est perpendiculaire à l'axe d'oscillation
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Groupe de ressorts en hélice associés à un solide oscillant de manière à exercer un couple pur, dont le plan est perpendiculaire à l'axe d'oscillation
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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
G04B17/04—Oscillators acting by spring tension
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FR505231A1918-12-211919-10-20Groupe de ressorts en hélice associés à un solide oscillant de manière à exercer un couple pur, dont le plan est perpendiculaire à l'axe d'oscillation
ExpiredFR505231A
(fr)
Groupe de ressorts en hélice associés à un solide oscillant de manière à exercer un couple pur, dont le plan est perpendiculaire à l'axe d'oscillation
Groupe de ressorts en hélice associés à un solide oscillant de manière à exercer un couple pur, dont le plan est perpendiculaire à l'axe d'oscillation