US PATENT SUBCLASS 159 / 9.2
.~.~.~.~ Treated material inside drum

Current as of: June, 1999
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159 /   HD   CONCENTRATING EVAPORATORS

5  DF  FILM TYPE {4}
7  DF  .~ Moving-film support {1}
8  DF  .~.~ Gaseous current {1}
9.1  DF  .~.~.~ Rotary drum or disk {2}
9.2.~.~.~.~ Treated material inside drum

DEFINITION

Classification: 159/9.2

Treated material inside drum:

(under subclass 9.1) Apparatus in which the rotary drum supports the film interior thereof.