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

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit

Percussion drill bit

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

Percussion drill bit and a regrindable cemented carbide...

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

Percussion drill bit for rock perforators

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit

Percussion drill bit having centrally projecting insert

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

Percussion hammer for enlarging drilled holes

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

Percussion or hammer drill

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

Percussion or hammer drill

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

Percussion rock bit

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit

Percussion rock drill bit

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

Percussive blow assisted rotary drill

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

Percussive drill bit

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

Percussive rock drill bit and buttons therefor and method...

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

Percussive rock drill bit with asymmetric wing

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

Percussive shearing drill bit

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

Percussive tool

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

Pilot bit

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

Pilot bit for use in auger bit assembly

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

Pilot casing mill

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

Pilot reamer with composite framework