US PATENT SUBCLASS 62 / 905
.~ Column

Current as of: June, 1999
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62 /   HD   REFRIGERATION

902  DF  Apparatus {6}
905.~ Column {2}
906  DF  .~.~> Packing
907  DF  .~.~> Insulation

DEFINITION

Classification: 62/905

Column:

Subject matter under 902 with specific details of a distillation column (example: riser tubes, tray positioning, etc.).

(1) Note. See Class 196, subclass 100 and Class 202, subclass 158.