US PATENT SUBCLASS 165 / DIG 311
.~.~ Including particular flow deflector (e.g., shroud, diffuser, etc.)


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165 /   HD   HEAT EXCHANGE

DIG 228  DD  WITH FAN OR PUMP {3}
DIG 302  DD  .~ Rotary gas pump {7}
DIG 311.~.~ Including particular flow deflector (e.g., shroud, diffuser, etc.) {2}
DIG 312  DD  .~.~.~> Plural parallel deflectors
DIG 313  DD  .~.~.~> Deflector with curved surface