Director General of the Touhoku National Agiculture Experiment Station: Yoshihiro Yamashita

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5787825 Seeding machine with sensor controlled planting at predetermined depthExpiredApr 02, 97Aug 04, 98[A01C]
5044518 Seeding deviceExpiredMar 22, 90Sep 03, 91[B65H]

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