Roy R. Vann

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Flint, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for using a reciprocating pump vent-dump valve
- Patent number 6,857,477
- Issue date Feb 22, 2005
- Roy R. Vann
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Reciprocating pump dump valve and methods of use
- Patent number 6,672,393
- Issue date Jan 6, 2004
- Roy R. Vann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Reciprocating pump vent-dump valve and methods of use
- Patent number 6,666,270
- Issue date Dec 23, 2003
- Roy R. Vann
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Cable actuated downhole smart pump
- Patent number 6,497,281
- Issue date Dec 24, 2002
- Roy R. Vann
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Reciprocating pump standing head valve
- Patent number 6,382,244
- Issue date May 7, 2002
- Roy R. Vann
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Method for using a reciprocating pump vent-dump valve
- Publication number 20040163815
- Publication date Aug 26, 2004
- Roy R. Vann
- E21 - EARTH DRILLING MINING
Information Patent Application
Reciprocating pump dump valve
- Publication number 20040055743
- Publication date Mar 25, 2004
- Roy R. Vann
- E21 - EARTH DRILLING MINING
Information Patent Application
Reciprocating pump dump valve and methods of use
- Publication number 20030159830
- Publication date Aug 28, 2003
- Roy R. Vann
- E21 - EARTH DRILLING MINING
Information Patent Application
Reciprocating pump vent-dump valve and methods of use
- Publication number 20030159831
- Publication date Aug 28, 2003
- Roy R. Vann
- E21 - EARTH DRILLING MINING
Information Patent Application
Reciprocating pump standing head valve
- Publication number 20020014268
- Publication date Feb 7, 2002
- Roy R. Vann
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Cable actuated downhole smart pump
- Publication number 20020007952
- Publication date Jan 24, 2002
- Roy R. Vann
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...