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

Boring or penetrating the earth – Bit or bit element – Core forming type

Tooth for rotary drilling tool for drilling foundations

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

Tooth loading for earth boring bits

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

Tooth type drill bit with secondary cutting elements and...

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

Toughness optimized insert for rock and hammer bits

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

Tri-cone kerf gage

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Triangular oil well drill bit for use in unconsolidated formatio

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Triangular oil well drill bit for use in unconsolidated formatio

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

Tubular piling apparatus and method

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

Tungsten carbide nickel- chromium alloy hard member and...

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

Twist drill

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

Twist drill

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

Twist-drill bit

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

Two cone bit with extended diamond cutters

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

Two cone bit with non-opposite cones

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

Two cone bit with non-opposite cones

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Two stage drill bit

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

Two stage large diameter drill bit

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

Two-cone drill bit with enhanced stability

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

Two-cone drill bit with enhanced stability