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

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

Two-piece rotatable cutting bit

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

Two-prong rotary bit, especially for use with roof drills, and i

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

Ultra hard insert cutters for heel row rotary cone rock bit appl

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

Ultra hard insert cutters for heel row rotary cone rock bit appl

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

Ultra hard material cutter with shaped cutting surface

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

Ultra-hard and metallic constructions comprising improved...

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

Ultrahard composite constructions

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

Ultrasonic annular core bit

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

Ultrasonic rotary-hammer drill

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

Underreamer and method of use

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

Uninterrupted drill bit

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

Unitized rotary rock bit

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

Unitized seal for severe service applications

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

Unplanar non-axisymmetric inserts

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

Unplanar non-axisymmetric inserts

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

Unsegmented rotary rock bit structure and hydraulic fitting

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

Up-drill sub for use in rotary drilling

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

Vacuum, vacuum-pressure, or pressure circulation bit having jet-

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

Vacuum, vacuum-pressure, or pressure reverse circulation bit