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

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

Drill bit inserts enhanced with polycrystalline diamond

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

Drill bit inserts with interruption in gradient of properties

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

Drill bit inserts with interruption in gradient of properties

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

Drill bit inserts with variations in thickness of diamond...

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

Drill bit inserts with zone of compressive residual stress

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

Drill bit lubrication apparatus and method

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element

Drill bit nozzle

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element

Drill bit nozzle and method of attachment

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

Drill bit nozzle assembly and insert assembly including a...

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

Drill bit porting system

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

Drill bit stud and method of manufacture

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

Drill bit wear resistant surface for elastomeric seal

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element

Drill bit with a fixed cutting structure

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

Drill bit with adjustable cutters

Boring or penetrating the earth – Bit or bit element – With bit guide or bore wall compacting device

Drill bit with adjustable steering pads

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit

Drill bit with asymmetric gage pad configuration

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

Drill bit with canted gage insert

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

Drill bit with carbide coated cutting face

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

Drill bit with cemented carbide inserts