72363363
Jun 22, 1970
May 30, 1972
CUTTING TOOLS, INCLUDING EXTRAHARD, WEAR RESISTANT, AND CORROSION-PROOF CUTTING TOOLS-NAMELY, DRILLS, REAMERS, MILLING CUTTERS, GEAR CUTTERS, SCREW MILLING CUTTERS , BROACHES, TAPS, CHASERS, AND SINGLE-POINT CUTTING TOOLS
Yarns and Threads