Inventor
STEPHENSON BRENT G
US6 patents
Patents
6 patentsUS7389831B2Jun 24, 2008
Dual-member auger boring system
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Downhole generator for horizontal directional drilling
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Drill pipe
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US5799740ASep 1, 1998
Directional boring head with blade assembly
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Directional boring head with blade assembly
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US9850715B2Dec 26, 2017
Modular compaction boring machine system
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