HK

Hiroshi Kotacki

CC Chemical Grouting Co.: 1 patents #15 of 28Top 55%
Overall (All Time): #3,757,374 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5575345 Multi shaft drilling unit Mitsuhiro Shibasaki 1996-11-19