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Slant mounted hydraulic pumping system
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Patent number 10,760,388
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Issue date Sep 1, 2020
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Weatherford Technology Holdings, LLC
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James S. Trapani
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Pumping assembly
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Patent number 9,863,415
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Issue date Jan 9, 2018
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1238585 Alberta Ltd.
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Perry L. St. Denis
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E21 - EARTH DRILLING MINING
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Pumping assembly
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Patent number 8,875,781
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Issue date Nov 4, 2014
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1238585 Alberta Ltd.
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Perry L. St. Denis
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hydraulic oil well pumping apparatus
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Patent number 8,678,082
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Issue date Mar 25, 2014
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Lufkin Industries, LLC
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Michael A. Fesi
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Regenerative hydraulic lift system
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Patent number 8,562,308
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Issue date Oct 22, 2013
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Rodmax Oil & Gas, Inc.
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David A. Krug
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Pumping assembly
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Patent number 8,523,543
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Issue date Sep 3, 2013
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1238585 Alberta Ltd.
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Perry L. St. Denis
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hydraulic oil well pumping apparatus
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Patent number 8,235,107
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Issue date Aug 7, 2012
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Lufkin Industries, Inc.
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Michael A. Fesi
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Regenerative hydraulic lift system
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Patent number 8,083,499
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Issue date Dec 27, 2011
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QuaLift Corporation
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David A. Krug
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Hydraulic oil well pumping apparatus
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Patent number 7,762,321
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Issue date Jul 27, 2010
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Petro Hydraulic Lift System, L.L.C.
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Michael A. Fesi
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Fluid well pumping system
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Patent number 6,558,128
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Issue date May 6, 2003
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John E. Marvel
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Fluid well pump
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Patent number 6,435,838
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Issue date Aug 20, 2002
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John E. Marvel
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E21 - EARTH DRILLING MINING
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Pump jack
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Patent number 4,534,168
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Issue date Aug 13, 1985
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Newby O. Brantly
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Oil well pumping apparatus
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Patent number 4,530,645
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Issue date Jul 23, 1985
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Hydraunit Venture
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David L. Whatley
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Oil well jack
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Patent number 4,519,293
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Issue date May 28, 1985
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Joe E. Dooling
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hydraulic drive pump apparatus
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Patent number 4,474,002
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Issue date Oct 2, 1984
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L. F. Perry
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hydraulic operated surface pumping unit
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Patent number 4,449,896
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Issue date May 22, 1984
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Energy 2000, Inc.
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Robert Klepper
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Pump jack drive apparatus
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Patent number 4,438,628
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Issue date Mar 27, 1984
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Reginald D. Creamer
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Balance hydraulic pumping unit
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Patent number 4,347,049
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Issue date Aug 31, 1982
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John M. Anderson
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Oil well pump driving unit
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Patent number 4,320,799
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Issue date Mar 23, 1982
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Thomas A. Gilbertson
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hydraulic control apparatus
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Patent number 4,188,787
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Issue date Feb 19, 1980
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National Advanced Drilling Machines, Inc.
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Raymond J. Bromell
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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