YL

Yung-Chuan Liao

Overall (All Time): #1,259,903 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
D527591 Wrench tool — 2006-09-05
6334743 High-speed rotary machine — 2002-01-01
6047801 Ratchet screwdriver — 2000-04-11
5893305 Semi-automatic pistolled screwdriver with thorny rings — 1999-04-13