LandOfFree - US Patents - Listing for Metal tools and implements, making,Blank or process,Drill

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Rotary drill bit with improved cutter and method of manufacturin

Metal tools and implements – making – Blank or process – Drill

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary drill bits

Metal tools and implements – making – Blank or process – Drill

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Rotary rock bit with improved diamond filled compacts

Metal tools and implements – making – Blank or process – Drill

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Selected bearing couple for a rock bit journal and method for ma

Metal tools and implements – making – Blank or process – Drill

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Sintered diamond drill bits and method of making

Metal tools and implements – making – Blank or process – Drill

Patent

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Sintered diamond drill bits and method of making

Metal tools and implements – making – Blank or process – Drill

Patent

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Steel-tooth bit with improved toughness

Metal tools and implements – making – Blank or process – Drill

Reexamination Certificate

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Structure for use in drilling a subterranean formation

Metal tools and implements – making – Blank or process – Drill

Patent

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System, method and apparatus for enhanced cutting element...

Metal tools and implements – making – Blank or process – Drill

Reexamination Certificate

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Titanium carbide modified hardfacing for use on bearing surfaces

Metal tools and implements – making – Blank or process – Drill

Patent

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Tool having a tungsten carbide insert

Metal tools and implements – making – Blank or process – Drill

Reexamination Certificate

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Tool having a tungsten carbide insert

Metal tools and implements – making – Blank or process – Drill

Patent

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Twist drill

Metal tools and implements – making – Blank or process – Drill

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Wood drill and method of construction

Metal tools and implements – making – Blank or process – Drill

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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