US PATENT SUBCLASS 266 / 149
.~.~ Within evacuated chamber

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

144  DF  WITH MEANS TREATING OR HANDLING GASES EXHAUSTED BY TREATING MEANS {8}
148  DF  .~ By condensing and collecting a volatile constituent {6}
149.~.~ Within evacuated chamber

DEFINITION

Classification: 266/149

(under subclass 148) Device wherein said phase change is effected within a vacuum environment.