LandOfFree - US Patents - Listing for Boring or penetrating the earth,With tool shaft detail,Shaft carried guide or protector

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Radially stabilized drill bit

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

Patent

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Reamer stabilizer for rock drills

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

Patent

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Releasable drill string stabilizer

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

Patent

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Removable drill string stabilizers

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

Patent

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Removable guide member for guiding drill string components in a

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

Patent

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Removable wear protective means for a drilling tool

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

Patent

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Replaceable drill stabilizer sleeve

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

Patent

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Reverse circulating tool

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

Patent

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Reversible roller stabilizer extensions for earth boring head

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

Patent

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Rock drill bit loading device

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

Patent

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Roller cone core bit with spiral stabilizers

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

Patent

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Roller stabilizer

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

Patent

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Roller subs

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

Reexamination Certificate

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Rotary drilling systems

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

Patent

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Rotating drill pipe protector attachment and fastener assembly

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

Reexamination Certificate

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Rotating stabilizer for shaft drilling

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

Patent

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