Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
Inventor
active
Apparatus and method for a roller bit using collimated jets...
Method for case hardening rock bits and rock bits formed thereby
Rotary cone drill bit with enhanced journal bushing
Rotary cone drill bit with enhanced thrust bearing flange
Rotary rock bit with independently true rolling cutters
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Profile ID: LFUS-PAI-P-1365355