US PATENT SUBCLASS 34 / 454
.~.~.~ With contact with heat exchanger (e.g., drum or roller)

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
443  DF  .~ Gas or vapor contact with treated material {17}
444  DF  .~.~ Sheet, web, or strand {7}
454.~.~.~ With contact with heat exchanger (e.g., drum or roller) {2}
455  DF  .~.~.~.~> Pocket ventilator {2}
458  DF  .~.~.~.~> With vacuum guide roller

DEFINITION

Classification: 34/454

With contact with heat exchanger (e.g., drum or roller):

(under subclass 444) Process wherein the treated material directly touches a heat removing device, such as a barrel or a cylinder.