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

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

Metal-face-seal rock bit

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

Method and apparatus for drilling and enlarging a borehole

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

Method and apparatus for fabricating rotary cone drill bits

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

Method and apparatus for fabricating rotary cone drill bits

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

Method and apparatus for manufacturing and inspecting the qualit

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

Method and apparatus for mounting PCD compacts

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

Method and apparatus for retaining roller cone of drill bit

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion

Method and device for producing a borehole in the soil

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

Method and system for perceiving a boundary between a first...

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

Method for applying hardfacing material to a steel bodied...

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

Method for applying hardfacing to a substrate and its...

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

Method for case hardening rock bits and rock bits formed thereby

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

Method for forming a non-uniform interface adjacent ultra...

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

Method for hardfacing roller cone drill bit legs

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

Method for making a cone for a rock bit and product

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

Method for making rock bits

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

Method for mounting hard metal buttons in a drill bit

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

Method of altering a balance characteristic and moment...

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

Method of applying a wear-resistant layer to a surface of a...