P

Inventor

WALK HOWARD J

US6 patents
⚠️ This page may combine multiple inventors who share the name “WALK HOWARD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAKER HUGHES INC

4 patents
US5092412AMar 3, 1992

Earth boring bit with recessed roller bearing

BAKER HUGHES INC66 citations94
US6513607B2Feb 4, 2003

Metal-face-seal rock bit

BAKER HUGHES INC37 citations91
US6367569B1Apr 9, 2002

Replaceable multiple TCI kerf ring

BAKER HUGHES INC45 citations90
US4832135AMay 23, 1989

Flow through raise boring bit

BAKER HUGHES INC9 citations72

ACF IND INC

1 patent
US4040363AAug 9, 1977

Combination hatch covers

ACF IND INC15 citations72

REED MINING TOOLS INC

1 patent
US4697652AOct 6, 1987

Reversible roller stabilizer extensions for earth boring head

REED MINING TOOLS INC8 citations66