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

Drill bit with dual reaming rows

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

Drill bit with improved rolling cutter tooth pattern

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

Drill bit with improved rolling cutter tooth pattern

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

Drill bit with ridge-cutting cutter elements

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

Drill bit with ridge-cutting cutter elements

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

Drill bit with rows of cutters mounted to present a serrated cut

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

Drill bit with rows of cutters mounted to present a serrated...

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

Drill bit with suction jet means

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

Drill bit with suction jet means

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

Drill bit with suction jets

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

Drill bits

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

Drill bits and drilling tools including abrasive...

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

Drill bits for obtaining core samples

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

Drill bits with enhanced hydraulic flow characteristics

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

Drill rod and drill bit with rocking connection

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

Drill-bit with full offset cutter bodies

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

Drilling apparatus an excavation bit

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

Drilling apparatus of the cutting and shearing type

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

Drilling bit