Patents/Inventors

Hiroyuki Nagakura

TokyoJP2 patents

3 Patents

US123923012025
Piston Unit, Top Land Member, and Combination of Piston Unit Parts
TPR Co., Ltd.
0 cites
US121170842024
Combination of Piston Rings, and Combination Structure of Piston and Piston Rings
TPR Co., Ltd.
0 cites
US120004912024
Combination of Piston Rings, and Combination Structure of Piston and Piston Rings
TPR Co., Ltd.
0 cites