HS

Hiromasa Sugimura

HZ Hitachi Zosen: 1 patents #216 of 531Top 45%
Overall (All Time): #3,743,638 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5520137 Twin-hull boat with hydrofoils Toshihiko Arii, Kensaku Takenaka, Yoshitada Hiramatsu, Masayuki Segawa, Ryohei Takeuchi +3 more 1996-05-28