Inventor

VAN WAES DUANE R

US2 patents

Patents

2 patents

US6394202B2May 28, 2002

Drill bit having diamond impregnated inserts primary cutting structure

SMITH INTERNATIONAL67 citations91

US6725953B2Apr 27, 2004

Drill bit having diamond impregnated inserts primary cutting structure

SMITH INTERNATIONAL39 citations88