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

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Drill bit and cutter therefor

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Drill bit and cutting structure having enhanced placement and si

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Drill bit and drill tip having a tip-locating structure

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Drill bit and improved cutting element

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

Drill bit and method of manufacture

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Drill bit and method of manufacture

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Drill bit and method of metallurgical and mechanical holding of

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Drill bit and steel combination for improved fluid flow

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

Drill bit and surface treatment for tungsten carbide insert

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Drill bit and system for drilling a borehole

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

Drill bit assembly

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Drill bit assembly for fluid-operated percussion drill tools

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Drill bit assembly for releasably retaining a drill bit cutter

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

Drill bit assembly with fluid separator

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

Drill bit bearing seal

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Drill bit compact with boron or beryllium for fracture resistanc

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

Drill bit cone protector

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Drill bit cutter

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Drill bit cutter and method for reducing pressure loading of cut