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

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

Rotary drill bits

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

Rotary drill bits

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

Rotary drill bits

Boring or penetrating the earth – Bit or bit element – Cutting edge self-renewable during operation

Rotary drill bits

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

Rotary drill bits and cutting elements for such bits

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

Rotary drill bits and method of use

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

Rotary drill bits and methods of designing such drill bits

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

Rotary drill bits and methods of designing such drill bits

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

Rotary drill bits employing optimal cutter placement based on ch

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

Rotary drill bits employing tandem gage pad arrangement

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

Rotary drill bits exhibiting cutting element placement for...

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

Rotary drill bits exhibiting sequences of substantially...

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

Rotary drill bits for directional drilling employing movable...

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

Rotary drill bits for directional drilling employing tandem gage

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