US PATENT SUBCLASS 159 / 8
.~.~ Gaseous current

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.~.~ Gaseous current {1}
9.1  DF  .~.~.~> Rotary drum or disk {2}

DEFINITION

Classification: 159/8

(under subclass 7) Apparatus in which a gaseous current is directed against or in proximity to the surface of the film on the moving support.

SEE OR SEARCH CLASS

261, Gas and Liquid Contact Apparatus,

80, for gas and liquid contact comprising endless belts.