HO

Hisao Ootsuga

HA Hakko: 1 patents #35 of 70Top 50%
TC Tokyo Gas Co.: 1 patents #144 of 412Top 35%
Overall (All Time): #4,025,603 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4556580 Method of repairing pipes laid underground Takashi Kamuro, Isao Saito, Motoyuki Koga 1985-12-03