US PATENT SUBCLASS 165 / DIG 185
.~ Having stacked plates forming flow channel therebetween

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

DIG 184  DD  INDIRECT-CONTACT CONDENSER {12}
DIG 185.~ Having stacked plates forming flow channel therebetween {1}
DIG 186  DD  .~.~> Stacked plates surrounded by housing confining another fluid