KA

Kazuyoshi Aruga

TC Teikoku Piston Ring Co.: 1 patents #41 of 95Top 45%
Overall (All Time): #3,793,271 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5295696 Combined oil ring Akira Harayama 1994-03-22