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H. Stanley Mullins
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Perry, OK, US
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Patents Grants
last 30 patents
Information
Patent Grant
Directional reaming system
Patent number
7,654,340
Issue date
Feb 2, 2010
The Charles Machine Works, Inc.
Kelvin P. Self
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual-member auger boring system
Patent number
7,389,831
Issue date
Jun 24, 2008
The Charles Machine Works, Inc.
H. Stanley Mullins
E21 - EARTH DRILLING MINING
Information
Patent Grant
Directional reaming system
Patent number
7,195,079
Issue date
Mar 27, 2007
The Charles Machine Works, Inc.
Kelvin P. Self
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rotary driven retrieval tool for horizontal directional drilling op...
Patent number
6,848,506
Issue date
Feb 1, 2005
The Charles Machine Works, Inc.
Richard Felix Sharp
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Dual-member auger boring system
Publication number
20080073123
Publication date
Mar 27, 2008
H. Stanley Mullins
E21 - EARTH DRILLING MINING
Information
Patent Application
Directional Reaming System
Publication number
20070187148
Publication date
Aug 16, 2007
The Charles Machine Works, Inc.
Kelvin P. Self
E21 - EARTH DRILLING MINING
Information
Patent Application
Pipe burster with spherical bursting member
Publication number
20060157276
Publication date
Jul 20, 2006
Jim Carothers
E21 - EARTH DRILLING MINING
Information
Patent Application
Multi-function work machine
Publication number
20050102866
Publication date
May 19, 2005
Cody L. Sewell
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
Directional reaming system
Publication number
20040188142
Publication date
Sep 30, 2004
Kelvin P. Self
E21 - EARTH DRILLING MINING