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Apparatus and method for vibrating a drill bit

Boring or penetrating the earth – Processes
Reexamination Certificate

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Apparatus and method for visually detecting wear to insert...

Boring or penetrating the earth – Processes
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Apparatus and methods for drilling

Boring or penetrating the earth – Processes – Boring with specific fluid
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Apparatus and methods for drilling

Boring or penetrating the earth – Processes – Boring with specific fluid
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Apparatus and methods for drilling a wellbore using casing

Boring or penetrating the earth – Processes – Boring curved or redirected bores
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Apparatus and methods for drilling and lining a wellbore

Boring or penetrating the earth – Processes
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Apparatus and methods for drilling wellbores that utilize a...

Boring or penetrating the earth – Processes – Boring curved or redirected bores
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Apparatus and methods for drilling with casing

Boring or penetrating the earth – Processes
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Apparatus and methods for horizontal completion of a water well

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

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Apparatus and methods for sponge coring

Boring or penetrating the earth – Processes – Sampling of earth formations
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Apparatus and methods for sponge coring

Boring or penetrating the earth – Processes – Sampling of earth formations
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Apparatus and methods for the aeration of cesspools

Boring or penetrating the earth – Processes – Boring with specific fluid
Patent

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Apparatus and methods of separation of materials in an...

Boring or penetrating the earth – Processes – Boring with specific fluid
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Apparatus and process for drilling casing with...

Boring or penetrating the earth – Processes – Boring curved or redirected bores
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Apparatus and process for drilling underground arcuate paths uti

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

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Apparatus and process for removing drilling fluid from drill...

Boring or penetrating the earth – Processes – Boring with specific fluid
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Apparatus and process for removing liquids from drill cuttings

Boring or penetrating the earth – Processes – Boring with specific fluid
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Apparatus for and a method of drilling offset wells for producin

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

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Apparatus for and method of directional drilling

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

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Apparatus for and method of drilling a hole into the ground

Boring or penetrating the earth – Processes
Patent

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