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

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

Downhole stabilizers

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

Downhole stabilizers

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

Downhole tools having circumferentially spaced rolling elements

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

Drill bit

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

Drill bit (A)

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

Drill bit assembly having improved operational life

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

Drill bit reamer stabilizer

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

Drill bit with debris conveying flute

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

Drill for making a pole in the ground and a method for applying

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

Drill pipe

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

Drill pipe assemblies

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

Drill pipe with helical ridge for drilling highly angulated well

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

Drill rod and drilling apparatus

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

Drill steel

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

Drill string member

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

Drill string tool with bearing sleeve

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

Drilling tool

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

Drilling tool having frictionally rotatable drilling head

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

Drilling tool intended to widen a well