INPRO, INC.

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5161804 Magnetic sealExpiredJul 09, 91Nov 10, 92[F16J]
5158304 Captured rotor sealExpiredJan 23, 90Oct 27, 92[F16J]
5137049 Pressure relief valveExpiredAug 08, 91Aug 11, 92[F16K]
4304409 Sealing assemblyExpiredJun 11, 79Dec 08, 81[F16J]
4218538 Two staged continuous fermentation process for production of heteropolysaccharideExpiredDec 07, 77Aug 19, 80[C12R, C12Q, C12M]

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