TH

Tetsuyoshi Hara

RC Rion Co.: 1 patents #63 of 139Top 50%
Overall (All Time): #3,950,527 of 4,157,543Top 100%
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Patent #TitleCo-InventorsDate
4739511 Hearing aid Kiyoharu Hori, Takuo Yamamoto 1988-04-19