CHALLENGE

PAPER DRILLING MACHINES, SLOTTING ATTACHMENTS FOR PAPER DRILLING MACHINES, PAPER DRILLS, INDEX GAUGES, PAPER DRILL SHARPENERS, PAPER CORNERING MACHINES, PAPER CUTTING MACHINES, [ PAPER CUTTER KNIFE GUARD, PRINTERS' PROOF PRESS, PRINTING PRESSES, ] PRINTERS' QUOINS, PRINTERS' QUOIN KEYS [ , PRINTERS' GALLEYS, PRINTERS' FURNITURE, PRINTERS' PLATE MOUNTING EQUIPMENT, PRINTERS' BOOK BLOCKS, PRINTERS' NEWSPAPER BASES, PRINTERS' IMPOSING SURFACES, PAPER PUNCHES, PRINTERS' ROUTER, AND PRINTERS' TYPE HIGH MACHINE ]