Satomi Seisakusho Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5651466 Swirl type foreign material removing machine and method of removing foreign material by the machineExpiredMar 20, 95Jul 29, 97[B04C, B01D]
5474240 Paper material refining apparatusExpiredApr 04, 95Dec 12, 95[B02C]
5435444 Composite type screenExpiredMar 08, 94Jul 25, 95[B07B]
5381906 Paper stock cleaning and collecting apparatusExpiredDec 07, 93Jan 17, 95[B03B]
5299747 Paper material screening/refining apparatusExpiredApr 27, 92Apr 05, 94[B02C]
5078859 Stock screening apparatusExpiredJun 19, 90Jan 07, 92[B03B, D21D]
5048765 Paper material refining apparatusExpiredAug 31, 90Sep 17, 91[B02C]

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