US PATENT SUBCLASS 159 / 13.2
.~.~ Contacting tube

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

5  DF  FILM TYPE {4}
13.1  DF  .~ Moving film {4}
13.2.~.~ Contacting tube {1}
13.3  DF  .~.~.~> Outside of tube

DEFINITION

Classification: 159/13.2

Contacting tube:

(under subclass 13.1) Apparatus wherein the film comes in contact with a tube.