US PATENT SUBCLASS 162 / 250
.~.~ Heating means

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


162 /   HD   PAPER MAKING AND FIBER LIBERATION

232  DF  APPARATUS {22}
233  DF  .~ Digester {12}
250.~.~ Heating means

DEFINITION

Classification: 162/250

(under subclass 233) Apparatus provided with means to cause a rise in temperature of either the stock material or the chemical treating fluid.

(1) Note. Included in this subclass may be found for example, means discharging or introducing fluids through a heating steam line.