US PATENT SUBCLASS 159 / 47.2
.~ Involving urea

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

47.1  DF  PROCESSES {4}
47.2.~ Involving urea

DEFINITION

Classification: 159/47.2

Involving urea:

(under subclass 47.1) Processes wherein an urea containing material is concentrated.