U.S. federal trademark · Serial No. 73503462 · Reg. No. 1353714
MACHINES AND APPARATUS FOR THE PRODUCTION AND REFINING OF PULP AND PARTS THEREOF, NAMELY, COMPRESSING SCREW FEEDERS, IMPREGNATING VESSELS AND SCREW CONVEYORS USED IN MECHANICAL, THERMOMECHANICAL AND CHEMICAL PULPING SYSTEMS
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