Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Rolling or rotatable-type bit mount
Inventor
active
Coupler and roof drill bit assembly using such coupler
Cutting toolholder with recessed groove for cutting tool...
Drill bit, hard member, and bit body
Earth penetrating rotary drill bit with helical ports
Liquid seal for wet roof bit
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Profile ID: LFUS-PAI-P-2074966