HI

Hiroshi Ikutake

NC Nippon Piston Ring Co.: 2 patents #59 of 208Top 30%
Overall (All Time): #2,351,531 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4499643 Process for manufacturing a piston ring — 1985-02-19
4497102 Process for manufacturing a piston ring — 1985-02-05