US PATENT SUBCLASS 261 / 159
.~ Incoming fluid exchanges heat

Current as of: June, 1999
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261 /   HD   GAS AND LIQUID CONTACT APPARATUS

158  DF  INDIRECT INTERCHANGE OR HEAT BETWEEN CONTACT FLUIDS {1}
159.~ Incoming fluid exchanges heat {1}
160  DF  .~.~> With fluid at or downstream of contact zone {1}

DEFINITION

Classification: 261/159

(under subclass 158) Subject matter in which one of the contact fluids exchanges heat prior to contact.