TH

Toshihisa Hikosaka

SI Sumitomo Metal Industries: 1 patents #630 of 1,462Top 45%
Overall (All Time): #4,116,470 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4214311 Method and apparatus for measuring insulation resistance Koichi Nakashima, Kiyosi Nagaoka 1980-07-22