US PATENT SUBCLASS 159 / 47.2
.~ Involving urea


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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.