YS

Yashuharu Seki

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #3,841,398 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5079392 Gas circuit breaker Masanori Tsukushi, Osamu Koyanagi, Yukio Kurosawa 1992-01-07