SM

Sumiko Maruyama

NK Nippon Kogaku K.K.: 1 patents #221 of 382Top 60%
Overall (All Time): #4,083,941 of 4,157,543Top 100%
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Patent #TitleCo-InventorsDate
4251147 Electronic flash with calculator Shiro Sugimori, Tetsuro Goto 1981-02-17