US

Utsumi Shigeo

DL Diafoil Company, Limited: 1 patents #30 of 52Top 60%
Overall (All Time): #3,824,207 of 4,157,543Top 95%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5212006 High density magnetic recording medium — 1993-05-18