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

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

Rotary drill bits for directional drilling employing tandem...

Boring or penetrating the earth – Bit or bit element – Noncutting portion forwardly of cutting portion

Rotary drill bits for directional drilling employing tandem...

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

Rotary drill bits for directional drilling exhibiting...

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

Rotary drill bits having nozzles to enhance recirculation

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

Rotary drill bits with extended bearing surfaces

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

Rotary drill bits with nozzle former and method of manufacturing

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

Rotary drill bits with plural sealing systems

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

Rotary drilling bits

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

Rotary drilling bits for directional drilling exhibiting...

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

Rotary drilling device

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

Rotary drilling device

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

Rotary drilling device

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

Rotary drilling tools

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

Rotary drills and drill bits

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

Rotary drills bits

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

Rotary earth boring drill and method of assembly thereof

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

Rotary earth drill bit socket shield

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

Rotary earth drilling bit

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

Rotary earth strata penetrating tool with a cermet insert having