Inventor

IWAO TOMOYOSHI

JP2 patents

Patents

2 patents

US4873149AOct 10, 1989

Vibration-damper metal sheets

NISSHIN STEEL CO LTD33 citations87

US5294271AMar 15, 1994

Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance

NISSHIN STEEL CO LTD9 citations70