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

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Rotary percussion drill bit

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary percussion earth boring bit

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary percussion earth boring bit

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit and method of making same

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit and method of making same

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit ball plug

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with hardfacing to reduce cone erosion

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

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with improved diamond-filled compacts

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with independently true rolling cutters

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with infiltrated bearings

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with infiltrated bearings

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with multiple row coverage for very hard formati

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with the bearing pin fused to the rock bit arm

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary spade drill arrangement

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary stone-cutting head with hardened teeth inserts

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary-percussion drill with a four-start helical shaft

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

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

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

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

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotatable cutting bit assembly

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotatable cutting bit assembly with cutting inserts

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotatable cutting bit assembly with cutting inserts

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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