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

Boring or penetrating the earth – Bit or bit element – Forked rotary nontracking

Rotary drill bit having drag cutting elements

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

Rotary drill bit having filling opening for the installation...

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

Rotary drill bit having improved mounting means for multiple cut

Boring or penetrating the earth – Bit or bit element – Cutting edges relatively longitudinally movable during...

Rotary drill bit having moveable formation-engaging members

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

Rotary drill bit including polycrystalline diamond cutting...

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

Rotary drill bit locking mechanism

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

Rotary drill bit seal

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

Rotary drill bit with cutting elements having a thin abrasive fr

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

Rotary drill bit with hardfaced fluid passages and method of man

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

Rotary drill bit with improved cutter

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

Rotary drill bit with improved cutter and seal protection

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

Rotary drill bit with improved cutter and seal protection

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

Rotary drill bit with improved shirttail and seal protection

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

Rotary drill bit with lip seal in roller cone bit

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

Rotary drill bit with nozzles designed to enhance hydraulic...

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

Rotary drill bit with rotary cutter

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

Rotary drill bit with rotary cutters

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

Rotary drill bit with rotary cutters

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

Rotary drill bit with strainer element