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Etsuroh Nakao

JC Japan Vilene Company: 1 patents #56 of 154Top 40%
📍 Ibaraki, JP: #4,343 of 6,779 inventorsTop 65%
Overall (All Time): #3,681,111 of 4,157,543Top 90%
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Patent #TitleCo-InventorsDate
5738788 Filter material Takashi Tokiwa, Yoshiaki Kawatsu 1998-04-14