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

Inclined leg earth-boring bit

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

Inclined-jet drilling tool

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

Insert attack angle for roller cone rock bits

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

Insertable devices for retention systems, structures for...

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

Inserts and compacts having coated or encrusted diamond particle

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

Inserts for drilling bits

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

Jet bit with variable orifice nozzle

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

Jet dual bit

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

Journal bearing type rock bit

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

Journal bushing drill bit construction

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

Kerf-cutting apparatus and method for improved drilling rates

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

Kerf-cutting apparatus for increased drilling rates

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

Land erosion protection on a rock cutter

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

Large compact cutter rotary drill bit utilizing directed hydraul

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

Large diameter bit with sweep pickup

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

Large diameter drill bit

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

Large diameter oil well drilling bit

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

Large diameter rock drill

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

Layered hardfacing, durable hardfacing for drill bits