Phillips Engineering Co.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6179568 Piston pump and method of reducing vapor lockExpiredDec 14, 99Jan 30, 01[F04B]
6024542 Piston pump and method of reducing vapor lockExpiredOct 10, 96Feb 15, 00[F04B]
5811026 Corrosion inhibitor for aqueous ammonia absorption systemExpiredAug 14, 96Sep 22, 98[C09K, F25B]
5782097 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pumpExpiredApr 30, 96Jul 21, 98[F25B]
5579652 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pumpExpiredAug 26, 94Dec 03, 96[F25B]
5570584 Generator-Absorber heat exchange transfer apparatus and method using an intermediate liquorExpiredNov 23, 94Nov 05, 96[F05B]
5564908 Fluid pump having magnetic driveExpiredFeb 14, 94Oct 15, 96[F04B]
5367884 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pumpExpiredJun 15, 93Nov 29, 94[F25B]
5271235 High efficiency absorption cycle of the gax typeExpiredNov 18, 91Dec 21, 93[F25B]

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