US PATENT SUBCLASS 165 / DIG 443
.~.~ Adjacent conduits with transverse air passages (e.g., radiator core type, etc.)

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

DIG 355  DD  HAVING SEPARATE FLOW PASSAGE FOR TWO DISTINCT FLUIDS {7}
DIG 442  DD  .~ Conduits {5}
DIG 443.~.~ Adjacent conduits with transverse air passages (e.g., radiator core type, etc.) {3}
DIG 444  DD  .~.~.~> Including transversely stacked fin sheets
DIG 445  DD  .~.~.~> Including transverse corrugated fin sheets
DIG 446  DD  .~.~.~> Including intermediate sheet between adjacent tubes forming air fin passages {1}