DL

Darrell Lewis

KU Kai U.S.A.: 1 patents #13 of 20Top 65%
Overall (All Time): #2,082,194 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8601907 Knife blade manufacturing process Craig Green 2013-12-10
5427353 Drilling mud circulating pit clean out gate valve — 1995-06-27