DC

David Chapman

SP Sea To Summit Pty: 8 patents #3 of 9Top 35%
IL International Tool Company Limited: 3 patents #1 of 4Top 25%
HH Handy & Harman: 1 patents #22 of 36Top 65%
OI Oceaneering International: 1 patents #133 of 280Top 50%
Overall (All Time): #149,102 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #TitleCo-InventorsDate
4561623 Book holder Charles G. Shepherd 1985-12-31