LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Element of a rotating drill pipe string

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

Elements faced with super hard material

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

Elements faced with superhard material

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

Elements faced with superhard material

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

Elements faced with superhard material

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

Elements faced with superhard material

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

Elements faced with superhard material

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

Elements faced with superhard materials

Boring or penetrating the earth – Wedging slip assembly for supporting a pipe or rod

Elevator apparatus and method for running well bore tubing

Boring or penetrating the earth – With above-ground guide for relatively advancing tool

Elevator for supporting an elongate member such as a drill pipe

Boring or penetrating the earth – Processes

EMF sacrificial anode sub and method to deter bit balling

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

Encapsulated diamond particles, materials and impregnated...

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft

Encapsulated elastomeric relief valve

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Enclosed jar tool

Boring or penetrating the earth – Tool actuation by reaction of rotating eccentric mass

Energy accelerator

Boring or penetrating the earth – With above-ground means to impact an earth-penetrating means

Engine-driven breaker

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

Engineered enhanced inserts for rock drilling bits

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

Engineered enhanced inserts for rock drilling bits

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

Engineered enhanced inserts for rock drilling bits