Yi-chieh Shih

3 Patents

• US122762962025

  Self-drilling Screw Structure and Manufacturing Method Thereof

  BI-MIRTH Corp.

  0 cites
• US117137792023

  Fast Chip Removal Reaming Screw

  BI-MIRTH Corp.

  0 cites
• US115983632023

  Low-wear Screw Structure

  BI-MIRTH Corp.

  0 cites