PC

Pi-Yi Chang

AC Apex Mfg. Co.: 2 patents #6 of 17Top 40%
📍 Toucheng Township, TW: #13 of 45 inventorsTop 30%
Overall (All Time): #2,116,225 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7644849 Effort-saving stapler Eric Tsai, Chih-Wei Hu 2010-01-12
7604149 Effort-saving stapler Eric Tsai, Chih-Wei Hu 2009-10-20