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

Roller cone drill bits with optimized bearing structures

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

Roller cone drill bits with optimized cutting zones, load...

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

Roller cone for drill bit having improved resistance to...

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

Roller cone gage surface cutting elements with multiple ultra ha

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

Roller cone rock bit having improved cutter gauge face surface c

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

Roller cutter

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

Roller cutter

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

Roller cutter assembly having adjustable ring cutter spacing

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

Roller cutter drill bit

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

Roller cutter mount for tunneling machine

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

Roller cutter mounts

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

Roller cutter with a tilted journal

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

Roller cutter with major and minor insert rows

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

Roller drill bit having radial-thrust pilot bushing incorporatin

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

Roller reamer

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

Roller reamer apparatus

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

Roller reamer with rotatably positioned bearing block

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

Roller reamer/stabilizer

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

Roller-reamer