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

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

Carbide bolster

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

Carbide tipped drill bit for boring holes in concrete and steel

Boring or penetrating the earth – Bit or bit element – Casing shoe type

Casing and liner drilling bits

Boring or penetrating the earth – Bit or bit element – Casing shoe type

Casing and liner drilling bits

Boring or penetrating the earth – Bit or bit element – Casing shoe type

Casing and liner drilling bits and reamers

Boring or penetrating the earth – Bit or bit element – Casing shoe type

Casing drilling shoe

Boring or penetrating the earth – Bit or bit element – Casing shoe type

Casing shoe with cutting means

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

Cast steel rock bit cutter cones having metallurgically bonded c

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

Casting having in-situ cast inserts and method of manufacturing

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

Cavitating jet device

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

Cavitating liquid jet assisted drill bit and method for deep-hol

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

Cavitation nozzle plate adapter for rock bits

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

Cemented carbide tool

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

Centered-leg roller cone drill bit

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

Centrifugal water-air separation in earth drilling bits

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

Chamfered cutting structure for downhole drilling

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

Chamfered edge gage cutters and drill bits so equipped

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

Chamfered pointed enhanced diamond insert

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

Chip relief for rock bits