YS

Yasumi Shiraishi

EC Eagle Industry Co.: 1 patents #172 of 314Top 55%
MM Mitsubishi Mining: 1 patents #886 of 2,247Top 40%
Overall (All Time): #3,931,715 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4844483 Floating seal device Katsuhiko Iijima, Shoji Mizoe, Youichi Ogata 1989-07-04