ELECTROLIZING

Machine Tools-Namely, Taps, Drills, Reamers, End-Mills, Counter-Bores, Milling Cutters, Slitting and Slotting Saws, Hobs, Files, Chasers, Countersinks, Dies, Arbors, Collets, Mandrels, Gear Cutters, Broachers, Burrs, and Form Tools Comprising Cutters and Dovetail Tools

Electrolytically Treating Metals to Harden the Surfaces Thereof