RY

Rikio Yokota

Overall (1997): #87,607 of 185,788Top 50%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5694769 Liquid oxidizer immersion type hybrid rocket Ryojiro Akiba, Nobuhiro Tanatsugu, Masahiro Kohno 1997-12-09