US PATENT SUBCLASS 165 / DIG 121
.~.~.~ Serpentine heat exchange flow path


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

DIG 92  DD  WITH VALVE OR MOVABLE DEFLECTOR FOR HEAT EXCHANGE FLUID FLOW {6}
DIG 109  DD  .~ With by-pass of heat exchanger or heat exchanger section {2}
DIG 120  DD  .~.~ U or serpentine heat exchange flow path {2}
DIG 121.~.~.~ Serpentine heat exchange flow path