Inventor

FUKAGAWA DAISUKE

JP3 patents

Patents

3 patents

US5596706AJan 21, 1997

Highly reliable online system

HITACHI LTD228 citations97

US5379418AJan 3, 1995

Highly reliable online system

HITACHI LTD142 citations97

US5307481AApr 26, 1994

Highly reliable online system

HITACHI LTD152 citations97