IPC 2013 : D21F 5/08 : Arrangement of steam points in the cylinders.

IPC2013 > D > D21 > D21F > D21F 5/00 > D21F 5/08[2] > Arrangement of steam points in the cylinders.
D SECTION D — TEXTILES; PAPER.
D21 PAPER-MAKING; PRODUCTION OF CELLULOSE.
D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON.
D21F 5/00 Dryer section of machines for making continuous webs of paper.
D21F 5/08 · · Arrangement of steam points in the cylinders.