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Reamer apparatus for ground boring machine

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Reexamination Certificate

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Reamer having toroidal crusher body and method of use

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Reexamination Certificate

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Rock drilling apparatus

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Rock drilling apparatus and method

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Roller pipe burster

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Reexamination Certificate

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Rotary cutter for cable following apparatus

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Self-cleaning raise boring head system

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Side cutting device for earth boring procedures

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Spherical reaming bit

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Spherical reaming bit

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Steerable directional drilling reamer

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Reexamination Certificate

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System for boring raises having portions of different diameters

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Uphole hammer

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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