Inventor

GRINDSTAFF KEITH

US2 patents

Patents

2 patents

US7584808B2Sep 8, 2009

Centralizer-based survey and navigation device and method

RAYTHEON UTD INC81 citations94

US7870912B2Jan 18, 2011

Centralizer-based survey and navigation device and method

RAYTHEON UTD INC6 citations70