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

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

Rotatable cutting bit assembly with cutting inserts

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

Rotatable cutting bit assembly with wedge-lock retention assembl

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

Rotatable cutting bit assembly with wedge-lock retention...

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

Rotating bits including a plurality of types of preferential cut

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

Rotating cutter drill set

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

Rotating pilot core bit for use in highly fractured formations

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

Rotational impact drill assembly

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

Round/flat carbide seat

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

Rubble and core removal apparatus

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

Safety mechanism for a raise drill

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

Scabbler bits

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

Screw thread coupling

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

Screw thread structure

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

Seal and seal shield assembly for rotary drill bits

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

Seal assembly for drill bits

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

Seal assembly for roller cutter drill bit having a pressure bala

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

Seal assembly for roller cutter drill bit having a pressure bala

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

Seal assembly for rotary drill bits

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

Seal cage assembly for relatively movable members