US PATENT SUBCLASS 62 / 903
.~ Heat exchange structure

Current as of: June, 1999
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62 /   HD   REFRIGERATION

902  DF  Apparatus {6}
903.~ Heat exchange structure {1}
904  DF  .~.~> Coiled heat exchanger

DEFINITION

Classification: 62/903

Heat exchange structure:

Subject matter under 902 with specific heat exchangers positioned within the distillation column (example: condenser/reboilers).