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

Rotary cone bit with functionally-engineered composite inserts

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

Rotary cone cutter

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

Rotary cone drill bit and method for enhanced lifting of fluids

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

Rotary cone drill bit modular arm

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

Rotary cone drill bit with angled ramps

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

Rotary cone drill bit with contoured inserts and compacts

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

Rotary cone drill bit with enhanced journal bushing

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

Rotary cone drill bit with enhanced thrust bearing flange

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

Rotary cone drill bit with improved bearing system

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

Rotary cone drill bit with improved cutter insert

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

Rotary cone drill bit with improved support arms

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

Rotary cone drill bit with integral stabilizers

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

Rotary cone drill bit with machined cutting structure

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

Rotary cone drill bit with truncated rolling cone cutters and do

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

Rotary cone milled tooth bit with heel row cutter inserts

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

Rotary cone rock bit and method

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

Rotary cone type rock bits

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

Rotary cutter assembly

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

Rotary cutter assembly