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Robert F. Crane

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Apparatus for directional drilling

E - Fixed Constructions – 21 – B
Patent

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Bit for horizontal directional boring

E - Fixed Constructions – 21 – B
Patent

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Drill bit for directional drilling

E - Fixed Constructions – 21 – B
Patent

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Improved sonde housing structure

E - Fixed Constructions – 21 – B
Patent

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Method and apparatus for directional boring

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-433529

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