Crown i.e. winding crown, for use on watch case, has coupling units securing wheel and piston when head occupies stable translation position to modify function of timepiece movement and slide wheel inside tube
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Ring screw and method of guidance on crown as a watch box.
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Device guidance and fixing a background and method of guidance and fixing such background on carrure.
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Pushbutton.
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Crown screw and mounting method of such crown.
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Screwing crown and method to assembly such a crown on a watch case
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Method for screwing a push button into a watch casing with a tool that engages with a part of the button that projects through the casing into its interior enabling button assembly and mounted to be executed sequentially