METHOD FOR FIXING A CRYSTAL TO THE MIDDLE PART OF A WATCH CASE
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United States of America Patent
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Apr 25, 2013
app pub date -
Oct 18, 2012
filing date -
Oct 21, 2011
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Abstract
Method for fixing a watch crystal (4) to a middle part (2) also made of plastic material, which delimits a watch case (1) with the crystal (4), wherein said watch crystal (4) comprises a top surface (6) facing the user side, and a bottom surface (8) opposite to the top surface (6), and a digital display device (12) is bonded to the bottom surface of the crystal, said method being characterized in that it consists in welding the assembly formed by the crystal (4) and the digital display device (12) to the middle part (2) by means of a laser beam.
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