US PATENT SUBCLASS 159 / 2.3
.~.~ Multistage

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

2.1  DF  SUPERHEATING AND PRESSURE RELEASE {1}
2.2  DF  .~ With extruder {1}
2.3.~.~ Multistage

DEFINITION

Classification: 159/2.3

Multistage:

(under subclass 2.1) Apparatus functioning in plural operations.