HY

Hiroshi Yoshizumi

Overall (2019): #166,575 of 560,194Top 30%
2
Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10519848 Precombustion-chamber type gas engine and operation control method of same Yuki Koshiba 2019-12-31
10480463 Engine Hideaki Okumura, Shoji Namekawa 2019-11-19