E - Fixed Constructions – 21 – B
Inventor
E - Fixed Constructions
21
B
Inventor
Country: United States Of America
Cantilevered hole opener
Hole opener with multisized, replaceable arms and cutters
Improved underreamer and method of use
Nutating single cone drill bit
Reamer having toroidal crusher body and method of use
Cantilevered hole opener
Hole opener with multisized, replaceable arms and cutters
Improved underreamer and method of use
Nutating single cone drill bit
Reamer having toroidal crusher body and method of use
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