Darrell Lewis — 2 Patents at Kai U.S.A.

Darrell Lewis has been granted 2 US patents while listed as an inventor at Kai U.S.A.. The first was granted in 1995 and the most recent in December 2013. Darrell Lewis ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Darrell Lewis in Maysville, OK, US.

Issued Patents All Time

Showing 1–2 of 2 patents

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

Darrell Lewis — 2 Patents

Issued Patents All Time

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