Inventor

SAMEJIMA SHUJI

JP2 patents

Patents

2 patents

US4570946AFeb 18, 1986

Nitrided piston ring with outer layer on surface

NIPPON PISTON RING CO LTD32 citations89

US4557492ADec 10, 1985

Nitrided piston ring with outer layer on surface

NIPPON PISTON RING CO LTD7 citations71