LandOfFree - US Patents - Listing for Boring or penetrating the earth,With tool shaft detail,Helix or helically arranged structure

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Drill rod and drilling apparatus

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Drill steel

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Drill string member

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Reexamination Certificate

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Drill string tool with bearing sleeve

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Reexamination Certificate

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Drilling tool

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Drilling tool having frictionally rotatable drilling head

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Drilling tool intended to widen a well

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Drilling tool with an interchangeable conveying spiral

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Dry hollow stem augers

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Earth displacement drill

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Element of a rotating drill pipe string

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Flexible drill string member especially for use in directional d

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Footing auger

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

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Free flow stabilizer

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Frictional vibration damper for downhole tools

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Helical drill

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Helical stress relief groove apparatus and method for subterrane

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Injection boring anchor with auger blade

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Integral blade cylindrical gauge stabilizer reamer

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Interchangeable conveying spiral for rock drills

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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