US PATENT SUBCLASS 110 / 303
.~.~.~ And furnace gas mixer

Current as of: June, 1999
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110 /   HD   FURNACES

297  DF  INCLUDING NONCOMBUSTIBLE FLUID SUPPLY MEANS {3}
301  DF  .~ Having treatment means {2}
302  DF  .~.~ Preheater {5}
303.~.~.~ And furnace gas mixer

DEFINITION

Classification: 110/303

And furnace gas mixer:

(under subclass 302) Apparatus further provided with means to intermingle the incoming fluid with gases rising from the combustion of the fuel.