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

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

Rotary-percussion drill with a four-start helical shaft

Boring or penetrating the earth – Bit or bit element – With bit guide or bore wall compacting device

Rotary-type earth boring drill bit, modular bearing pads...

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

Rotatable cutting bit assembly

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 – Impact or percussion type

Rotatable cutting bit assembly with cutting inserts

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 – 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