Boring or penetrating the earth
With means movable relative to tool or shaft to control...
Valve prevents upward flow
Corporate Assignee
active
No affiliations
Bit breaker
Cermets having transformation-toughening properties and method o
Combination drag and roller cutter drill bit
Combination fluid nozzle and backflow valve
Compound dynamic seal for rolling cutter drill bit
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Profile ID: LFUS-PAI-P-106558