US PATENT SUBCLASS 165 / DIG 191
.~.~.~ Including second-stage direct-contact condenser

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

DIG 184  DD  INDIRECT-CONTACT CONDENSER {12}
DIG 187  DD  .~ Having pump downstream of condenser {1}
DIG 188  DD  .~.~ Pump to remove only uncondensed vapor or air {3}
DIG 191.~.~.~ Including second-stage direct-contact condenser