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Earth boring guide

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Earth boring system and apparatus

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Earth drilling apparatus and method

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Earth drilling method and apparatus using multiple hydraulic for

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Electrically conducting an orientation signal in a directionally

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Electrically operated drilling method

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate

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Equi-pressure geosteering

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate

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Excavation system and method employing adjustable down-hole...

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate

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Extended reach drilling method

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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