MULTI-PIECE TWIST DRILL HEAD AND TWIST DRILL INCLUDING THE SAMEAANM Fang; X. DanielAACI BrentwoodAAST TNAACO USAAGP Fang; X. Daniel Brentwood TN USAANM Dufour; Jean-LucAACI FranklinAAST TNAACO USAAGP Dufour; Jean-Luc Franklin TN USAANM Wills; David J.AACI FranklinAAST TNAACO USAAGP Wills; David J. Franklin TN US - diagram, schematic, and image 09
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