72028901
Apr 25, 1957
Nov 11, 1958
TOOL STEEL IN THE FORM OF ANNEALED OR HEAT TREATED BILLETS, BARS, SHEETS AND PLATES, CIRCLES, STAMPED OR CUT FROM PLATES OR SHEETS FOR USE IN FABRICATING INTO SUCH ARTICLES AS CIRCULAR SAWS, CIRCULAR KNIVES, TOOLS AND DIES FOR HOT WORK, TOOLS AND DIES FOR HOT AND COLD EXTRUSION, HOT FORGING, FOR HOT AND COLD STAMPING AND THE LIKE; AND DISC AND RING AND SHAPED FORGINGS FORGED ON A STEAM HAMMER, DROP HAMMER OR PRESS FROM ROLLED OR PREFORGED STOCK, FOR USE IN FABRICATING INTO TOOLS AND DIES FOR HOT AND COLD WORK AND THE LIKE
Jewelry