YO

Yoshio Okuyama

Overall (All Time): #4,089,750 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4268251 Boring needle device for treatment of a dental root canal Mitsuo Takasugi 1981-05-19