E03B 3/12

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9970182 VacCirc-vacuum driven in-well air stripping and recirculationFeb 07, 15May 15, 18RAYS ENVIRONMENTAL REMEDIATION MANAGEMENT
9249560 Apparatus for activating or cleaning filter tube wellsApr 24, 10Feb 02, 16TEFTOREC GMBH
9038711 Deep-well pump systemDec 04, 10May 26, 15GRUNDFOS MANAGEMENT A/S
6352108 Well pipeNov 09, 99Mar 05, 02Meyer Rohr & Schacht GmbH, RHEINBRAUN AKTIENGESELLSCHAFT, A CORP. OF GERMANY,
5639380 System for automating groundwater recovery controlled by monitoring parameters in monitoring wellsMay 31, 94Jun 17, 97Sandoz Corp.
5586836 Bootstrapping process optimization for two phase vacuum extraction systemsMay 11, 94Dec 24, 96BCM Engineers, Inc.
5482620 Permeable ditch underwater water purification apparatusJul 14, 94Jan 09, 96Not available
5468088 Feedback control of groundwater remediationDec 30, 93Nov 21, 95CORNELL UNIVERSITY
5464309 Dual wall multi-extraction tube recovery wellOct 20, 94Nov 07, 95XEROX CORPORATION
5380126 Method of and arrangement for rinsing out impurities from groundMay 19, 93Jan 10, 95IEG INDUSTRIE-ENGINEERING GMBH, PARIBAS,
5358357 Process and apparatus for high vacuum groundwater extractionApr 30, 93Oct 25, 94XEROX CORPORATION
5348420 Method and arrangement for influencing liquid in groundDec 24, 92Sep 20, 94IEG INDUSTRIE-ENGINEERING GMBH, PARIBAS,
5050679 Method of sealing contaminated wellsSep 17, 90Sep 24, 91Not available
4664185 Freeze proof control center for submersible pumpsAug 14, 85May 12, 87Not available