HS

Hiromitsu Serizawa

BC Bridgestone Cycle Co.: 1 patents #13 of 30Top 45%
Overall (All Time): #3,901,607 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4920827 Stepless speed change device Kikuzo Takamiya, Yoshitaka Tamura, Yoichi Shibayama, Ritsuo Nishimura, Kiyofumi Hirai 1990-05-01