RJC ENTERPRISES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4744290 Pivoted damper blade and pin thereforExpiredAug 03, 87May 17, 88[F24F]
4377350 Pivot for damper assemblyExpiredAug 13, 81Mar 22, 83[F16C, F16D]
4355567 Pivoted blade damper and pinExpiredFeb 28, 80Oct 26, 82[F24F]
4305427 Damper assemblyExpiredSep 24, 80Dec 15, 81[F24F]
4241539 Seal for sides of pivoted blade structuresExpiredJan 18, 79Dec 30, 80[E06B]
4193605 Seal for damper bladesExpiredMay 05, 78Mar 18, 80[F16J]

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