TC

Tung-Hsien Chen

DP De Poan Pneumatic: 1 patents #19 of 33Top 60%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Keelung, TW: #193 of 650 inventorsTop 30%
Overall (All Time): #1,610,911 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6598775 Hammer head assembly for power hammer — 2003-07-29
6585142 Hammer head assembly used in an air nailing gun for driving U-nails — 2003-07-01
6442847 Portable punching machine — 2002-09-03