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Drill means

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Pivoted about substantially longitudinal axis
Patent

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Drill tool

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Pivoted about substantially longitudinal axis
Patent

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Earth auger and method for driving piles and the like by means o

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Pivoted about substantially longitudinal axis
Patent

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Excavation tool

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Pivoted about substantially longitudinal axis
Patent

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Groove cutter for concrete bores

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Pivoted about substantially longitudinal axis
Patent

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Rotary boring head

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Pivoted about substantially longitudinal axis
Patent

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Self actuating underreamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Pivoted about substantially longitudinal axis
Reexamination Certificate

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