DAVID W. DOYLE

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Groveton, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Low profile rod pumping unit with pneumatic counterbalance for the...
- Patent number 10,422,205
- Issue date Sep 24, 2019
- Lufkin Industries, LLC
- David W. Doyle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Control system and method of controlling a rod pumping unit
- Patent number 10,024,314
- Issue date Jul 17, 2018
- General Electric Company
- Shyam Sivaramakrishnan
- G05 - CONTROLLING REGULATING
Information Patent Grant
Low profile rod pumping unit with pneumatic counterbalance for the...
- Patent number 9,115,574
- Issue date Aug 25, 2015
- Lufkin Industries, LLC
- David W. Doyle
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Beam pumping unit for inclined wellhead
- Patent number 8,240,221
- Issue date Aug 14, 2012
- Lufkin Industries, Inc.
- Roddy W. Simpson
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Linear Drive Beam Pumping Unit
- Publication number 20190107105
- Publication date Apr 11, 2019
- LUFKIN INDUSTRIES, LLC
- David Warren Doyle
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONTROL SYSTEM AND METHOD OF CONTROLLING A ROD PUMPING UNIT
- Publication number 20170030170
- Publication date Feb 2, 2017
- GENERAL ELECTRIC COMPANY
- Shyam Sivaramakrishnan
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
LOW PROFILE ROD PUMPING UNIT WITH PNEUMATIC COUNTERBALANCE FOR THE...
- Publication number 20160131128
- Publication date May 12, 2016
- LUFKIN INDUSTRIES, LLC
- David W. Doyle
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Low Profile Rod Pumping Unit with Pneumatic Counterbalance for the...
- Publication number 20130306326
- Publication date Nov 21, 2013
- LUFKIN INDUSTRIES, INC.
- David W. Doyle
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
BEAM PUMPING UNIT FOR INCLINED WELLHEAD
- Publication number 20120031208
- Publication date Feb 9, 2012
- Lufkin Industries, Inc.
- RODDY W. SIMPSON
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...