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

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

Insert for mine roof tool bit

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

Insert having a surface of carbide particles

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

Insert retention and cooling apparatus for drag bits

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

Insert spacer assembly

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

Insert spacer assembly

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

Insert with locking projection

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 – Specific or diverse material

Inserts and compacts having coated or encrusted cubic boron...

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 – Specific or diverse material

Inserts and compacts with lead-in surface for enhanced retention

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 – Specific or diverse material

Inserts for earth-boring bits

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

Inserts having two components anchored together at a non-perpend

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Integral blade hole opener

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

Interchangeable bearing blocks for drill bits, and drill...

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

Intermittent high-drag oil well drilling bit

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

Internal fluid screen to prevent nozzle and port plugging

Boring or penetrating the earth – Bit or bit element – Core forming type

Internally dampened percussion rock drill

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

Internally reinforced polycrystalling abrasive insert