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

Barrier coated granules for improved hardfacing material

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

Bearing and lubrication system for earth boring bit

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

Bearing seal

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

Bearing seal

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

Bearing sealing means of earth boring bits

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

Biased nozzle arrangement for rolling cone rock bits

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

Bit apparatus

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

Bit gage hardfacing

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

Bit leg and cone hardfacing for earth-boring bit

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

Bit leg outer surface hardfacing on earth-boring bit

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

Bit of circular cross-section

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

Body structure and nozzle for enhancing the flow of drilling flu

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

Bonding of cutters in diamond drill bits

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

Boring apparatus

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

Boring apparatus capable of boring straight holes

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

Boring bit

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

Boring drill bit

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

Boring head

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

Boring head cutter