Structural component made of hard material for wristwatch

Structural component made of hard material for wristwatch

  • CN 1,332,273 C
  • Filed: 06/04/1999
  • Issued: 08/15/2007
  • Est. Priority Date: 06/05/1998
  • Status: Active Grant
First Claim
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1. the wrist-watch by hard material manufacturing knob of winding up is characterized by, and the knob of winding up comprises a hole, comprises the screw thread of integrating one with the described knob of winding up on the cylindrical wall in hole, it is characterized by, and described screw thread need not removed material and make.

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