PC

Pi-Hsia Chang

Overall (All Time): #2,161,745 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7281452 Wrench having a ratchet head able to vertically and horizontally rotate for 360° — 2007-10-16
7278626 Adjustable prying bar — 2007-10-09