US PATENT SUBCLASS 162 / 238
.~.~ Automatic control

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

232  DF  APPARATUS {22}
233  DF  .~ Digester {12}
238.~.~ Automatic control

DEFINITION

Classification: 162/238

(under subclass 233) Apparatus having means sensing a condition in the material undergoing treatment or in the treating fluid or chemical and in response thereto causing a control operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

252+, for apparatus other than digestion devices having automatic control features and see the Notes thereto for the locus of other apparatus having automatic control features.