US PATENT SUBCLASS 162 / 372
.~.~.~.~.~ Shell structure

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

232  DF  APPARATUS {22}
289  DF  .~ Running or indefinite length product forming and/or treating means {19}
363  DF  .~.~ Suction devices {6}
367  DF  .~.~.~ Traveling suction face {1}
368  DF  .~.~.~.~ Rotary pervious cylinder {2}
372.~.~.~.~.~ Shell structure

DEFINITION

Classification: 162/372

(under subclass 368) Apparatus in which the invention relates to the structure or details of the rotary pervious cylinder, per se.

SEE OR SEARCH CLASS

492, Roll or Roller, for a roll, per se, not elsewhere provided for.