KS

Katsuyoshi Sumitani

SK Sumitomo Gomu Kogyo Kabushiki Kaisha: 2 patents #4 of 24Top 20%
Overall (All Time): #2,354,593 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4537223 Rubber tube for dredging work — 1985-08-27
4537224 Rubber tube for dredging work Yasuo Takehara 1985-08-27