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CN
  • CN 2,608,662 Y
  • Filed: 03/26/2003
  • Issued: 03/31/2004
  • Est. Priority Date: 03/26/2003
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of ryce comprises framework and the pressure yarn groove on it, and it is characterized in that:

  • above-mentioned pressure yarn groove is a triangle.

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