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Selected: T

T-post hole-forming device and use for installing a T-post

Boring or penetrating the earth – Processes
Reexamination Certificate

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Taper lock removable stem for raise bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent

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Tapered friction bearing assembly

Boring or penetrating the earth – With below-ground tool drive prime mover
Patent

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Targetable drill with pressure telemetering of drill parameters

Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Patent

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Technique for damping oscillations in a drill string

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

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Technique for damping oscillations in a drill string

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

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Technique for disarming and arming electrically fireable explosi

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges
Patent

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Technique for drilling straight bore holes in the earth

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Reexamination Certificate

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Technique for providing an underground tunnel utilizing a powere

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover
Patent

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Technique for providing an underground tunnel utilizing a powere

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover
Patent

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Technique for providing an underground tunnel utilizing a powere

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover
Patent

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Technique for steering a downhole hammer

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

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Technique for steering and monitoring the orientation of a power

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover
Patent

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Telemetry method for cable-drilled boreholes and method for carr

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Patent

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Telescopable boring rod mechanism

Boring or penetrating the earth – With tool shaft detail
Reexamination Certificate

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Telescopic bar of drill rig

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section
Patent

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Telescopic drilling method

Boring or penetrating the earth – Boring without earth removal – Drive point detached from shaft to form cased bore or with...
Reexamination Certificate

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Telescopic kelly bar apparatus and method

Boring or penetrating the earth – Processes
Patent

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Telescopically extensible drill

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section
Patent

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Telescoping casing joint for landing a casting string in a well

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section
Patent

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