US PATENT SUBCLASS 165 / DIG 129
.~.~ Valve regulates flow through housing enclosing heat exchanger


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 126  DD  .~ Total flow rate through heat exchanger controlled by valve {3}
DIG 129.~.~ Valve regulates flow through housing enclosing heat exchanger {1}
DIG 130  DD  .~.~.~> Including valve regulating flow through heat exchanger