Inventor

PORTUGAL JOSEPH J

US3 patents

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

TRW INC

2 patents

US4761191AAug 2, 1988

Method of forming closely sized openings

TRW INC16 citations67

US4756373AJul 12, 1988

Rock drilling bit and a method of producing the same

TRW INC12 citations67

SANDVIK ROCK TOOLS AB

1 patent

US4867015ASep 19, 1989

Rock drilling bit and a method of producing the same

SANDVIK ROCK TOOLS AB32 citations86