LandOfFree - US Patents - Listing for Boring or penetrating the earth,Bit or bit element,Rolling cutter bit or rolling cutter bit element

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Diamond bonded construction with thermally stable region

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Diamond crown bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Diamond cutter rock bit with penetration limiting

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Different stiffness energizers for MF seals

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Differentially carburized rock bit cutter

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Differentially hardfaced rock bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Digital PLL with gear shift

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Directional drift and drill PDC drill bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Directional drill bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Disc cutter and method of replacing disc cutters

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Disc cutters for rock working machines

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Disc cutting unit for use on rock boring machines

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Disc cutting units for use on rock boring machines

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Disc drill bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Double cone cutting head for a drill bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Downhole drill bit cone with uninterrupted refractory coating

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Drag bits with dropping tendencies and methods for making...

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Drill bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Drill bit