Dresser U.K. Limited, A British Company

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4877427 Dry electrostatic precipitatorExpiredMay 09, 88Oct 31, 89[B03C]
4767423 Variable intensity rappingExpiredJan 27, 87Aug 30, 88[B03C]
4662300 Offshore load-handling systemExpiredAug 20, 85May 05, 87[B63B]
4649288 Pre-start warning system and machine incorporating such systemExpiredMar 01, 85Mar 10, 87[H02K, E21C]
4569685 Mast-type electro-precipitator discharge electrodesExpiredJul 05, 84Feb 11, 86[B03C]
4558404 Electrostatic precipitatorsExpiredApr 20, 83Dec 10, 85[H02P]
4530822 Gas/liquid contact processesExpiredMay 30, 84Jul 23, 85[C01B, B01D]
4321068 Non-welded discharge electrodeExpiredSep 29, 80Mar 23, 82[B03C]
4216674 Liquid flow meterExpiredFeb 03, 78Aug 12, 80[G01F]
4216708 Fume containmentExpiredNov 13, 78Aug 12, 80[F23J]
4213766 Method and means for distributing gas along an extended inlet portion of gas treatment meansExpiredAug 10, 78Jul 22, 80[B03C]

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