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Under reamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground
Patent

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Under reamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Plural cutter elements longitudinally relative movable into...
Reexamination Certificate

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Under-reaming pile bore excavator

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Plural cutter elements longitudinally relative movable into...
Patent

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Under-reaming pile bore excavator

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Under-reaming tool for boreholes

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Undercutting device for anchor holes

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by longitudinally relatively movable...
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Undercutting drill

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by longitudinally relatively movable...
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Underreamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer and method of use

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Reexamination Certificate

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Underreamer cutter arm

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by longitudinally relatively movable...
Patent

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Underreamer having splined torque transmitting connection betwee

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by cam or gear axially rotatable...
Patent

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Underreamer with cylindrical boss and socket hinge assembly for

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer with debris flushing flow path

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer with large cutter elements and axial fluid passage

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer with ported cam sleeve upper extension

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer with revolving diamond cutter elements

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreamer with turbulence cleaning mechanism

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Underreaming rotary drill

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Reexamination Certificate

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