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

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Drilling tools

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Drilling unit with hollow annular drill bit and central drill

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Drilling with concentric strings of casing

Boring or penetrating the earth – Bit or bit element – Adjustable cutter element

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Drilling with mixed tooth types

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

Drillout bi-center bit

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

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Dual cutting mill

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

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Dual dynamic rotary seal

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

Dual grade carbide substrate for earth-boring drill bit...

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

Dual metal face seal with single recessed energizer

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

Dual property hydraulic configuration

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

Dual-seal drill bit pressure communication system

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

Dual-seal drill bit pressure communication system

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

Dual-seal drill bit pressure communication system

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

Dual-seal drill bit pressure communication system

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

Duckbill with cutting teeth

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

Dynamic seal with soft interface

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

Dynamically stable hybrid drill bit

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

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