IPC 2013 : D21F 11/16 : Making paper strips for spinning or twisting.IPC2013 > D > D21 > D21F > D21F 11/00 > D21F 11/16 > Making paper strips for spinning or twisting.
D SECTION D — TEXTILES; PAPER.
D21 PAPER-MAKING; PRODUCTION OF CELLULOSE.
D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON.
D21F 11/00 Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines.
D21F 11/16 · Making paper strips for spinning or twisting.