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Directional boring head

Boring or penetrating the earth – Processes – Boring horizontal bores
Reexamination Certificate

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Directional boring head with blade assembly

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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Directional boring head with blade assembly

Boring or penetrating the earth – Processes – Boring horizontal bores
Reissue Patent

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Directional boring head with blade assembly

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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Directional drilling apparatus

Boring or penetrating the earth – Processes – Boring horizontal bores
Reexamination Certificate

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Directional drilling machine and method of directional drilling

Boring or penetrating the earth – Processes – Boring horizontal bores
Reexamination Certificate

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Directional multi-blade boring head

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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Directional multi-blade boring head

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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Directional multi-blade boring head

Boring or penetrating the earth – Processes – Boring horizontal bores
Reissue Patent

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Drill pipe

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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Drilling hole system for horizontal boreholes

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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Drilling machine and method of horizontal boring

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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Drilling short radius curvature well bores

Boring or penetrating the earth – Processes – Boring horizontal bores
Patent

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