TY

Tsung-Hsun Yang

Overall (1997): #20,910 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5685549 Chuck assembly for a tool bit — 1997-11-11
5609078 High-torsion ratchet mechanism assembly for a ratchet screwdriver — 1997-03-11