Inventor
MULLINS H STANLEY
US4 patents
Patents
4 patentsUS7389831B2Jun 24, 2008
Dual-member auger boring system
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US6848506B1Feb 1, 2005
Rotary driven retrieval tool for horizontal directional drilling operations
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US7654340B2Feb 2, 2010
Directional reaming system
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US7195079B2Mar 27, 2007
Directional reaming system
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