US PATENT SUBCLASS 62 / 902
Apparatus

Current as of: June, 1999
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62 /   HD   REFRIGERATION

902Apparatus {6}
903  DF  .~> Heat exchange structure {1}
905  DF  .~> Column {2}
908  DF  .~> Filter or absorber
909  DF  .~> Regeneration
910  DF  .~> Expander
911  DF  .~> Portable

DEFINITION

Classification: 62/902

Apparatus:

Subject matter concerned with specific details of cryogenic treatment of gas mixture apparatus not provided for below.