US PATENT SUBCLASS 159 / 13.4
.~.~ With gas wiping

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

5  DF  FILM TYPE {4}
13.1  DF  .~ Moving film {4}
13.4.~.~ With gas wiping

DEFINITION

Classification: 159/13.4

With gas wiping:

(under subclass 13.1) Apparatus having means for injected vapor or generated vapor to flow adjacent the film and relative thereto.