HY

Hirokazu Yasunaga

NC Nippon Piston Ring Co.: 1 patents #120 of 208Top 60%
📍 Adachi, JP: #135 of 222 inventorsTop 65%
Overall (All Time): #4,002,052 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4612260 Piston ring member Atsushi Kumagai, Tsutomu Tanabe 1986-09-16