Inventor
CAWTHORNE CHRIS
US4 patents
Patents
4 patentsUS6615935B2Sep 9, 2003
Roller cone bits with wear and fracture resistant surface
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US6536542B1Mar 25, 2003
Rock bit seal with multiple dynamic seal surface elements
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US6361873B1Mar 26, 2002
Composite constructions having ordered microstructures
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US6820704B2Nov 23, 2004
Rock bit seal with extrusion prevention member
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