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

Self-renewing multi-element cutting structure for rotary drag bi

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

Self-retaining downhole-hammer drill bit

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

Shaft drill bit with improved cutter bearing and seal arrangemen

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

Shaft drill bit with overlapping cutter arrangement

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

Shale diverting means for a sealed bearing drill bit

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

Shank structure for rotary drill bits

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

Shaped cutting-grade inserts with transitionless...

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

Shaped inserts with increased retention force

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

Shaped polycrystalline cutter elements

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

Sharp gage for mill tooth rock bits

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

Sharp gage for mill tooth rockbits

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

Shirttails for reducing damaging effects of cuttings

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

Shirttails for reducing damaging effects of cuttings

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

Shirttails for reducing damaging effects of cuttings

Boring or penetrating the earth – Bit or bit element – Casing shoe type

Shoe

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

Side cutting gage pad improving stabilization and borehole...

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

Side cutting gage pad improving stabilization and borehole...

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

Single cone earth boring bit

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

Single cone rock bit having inserts adapted to maintain hole...