US PATENT SUBCLASS 585 / *
HEAT CONSIDERATIONS

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

*HEAT CONSIDERATIONS {2}
910  DF  .~> Exploiting or conserving heat of quenching, reaction, or regeneration
911  DF  .~> Introducing, maintaining, or removing heat by atypical procedure {3}