Midland-Ross Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
H000777 Method for jet gas impingement quenchingExpiredMay 19, 87May 01, 90[C21D]
4693015 Direct fired cylinder dryerExpiredAug 26, 85Sep 15, 87[F26B]
4645085 Method of enhancing rigidity in a railway car coupler knuckleExpiredApr 08, 85Feb 24, 87[B61G]
4645393 Retainer for mechanical fastener memberExpiredNov 29, 84Feb 24, 87[F16B]
4637518 Coupler for a railway car coupler assemblyExpiredApr 08, 85Jan 20, 87[B61G]
4635804 Yoke for railway car coupler assemblyExpiredApr 08, 85Jan 13, 87[B61G]
4612746 Trench duct and cover assemblyExpiredJan 22, 85Sep 23, 86[E04B, E04F]
4578031 Dimensionally stable movable furnace hearthExpiredNov 09, 84Mar 25, 86[F27B, F27D]
4564317 Silo for storing solidifying loose material, especially flue dustExpiredSep 23, 83Jan 14, 86[B65G]
4548052 Apparatus for cooling a strip prior to a minispangle operationExpiredJan 30, 85Oct 22, 85[F25D]
4547150 Control system for oxygen enriched air burnerExpiredMay 10, 84Oct 15, 85[F23D]
4527506 Apparatus for cooling a strip prior to a minispangle operationExpiredMar 12, 84Jul 09, 85[C23C]
4493040 Apparatus and method of phase control for resistance welding and other resistive-inductive loadsExpiredJun 01, 82Jan 08, 85[B23K, G06G]
4486133 Retainer for mechanical fastener memberExpiredNov 23, 81Dec 04, 84[F16B]
4452153 Rotary hearth pyrolyzer with tapered spreader rollExpiredJan 19, 82Jun 05, 84[F23G]
4445618 Spring biased rotary railway car coupler carrierExpiredDec 30, 81May 01, 84[B61G]
4440213 Recuperator with floating interior housingExpiredSep 11, 81Apr 03, 84[F24H]
4433834 Composite cushion padExpiredDec 14, 81Feb 28, 84[F16F]
4428489 Rotary railroad car F couplerExpiredNov 17, 81Jan 31, 84[B61G]
4427220 Flexible joint for conduitExpiredMar 16, 81Jan 24, 84[F16L]

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