US PATENT SUBCLASS 110 / 306
.~.~.~ Water or steam

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}
306.~.~.~ Water or steam {1}
307  DF  .~.~.~.~> Below grate

DEFINITION

Classification: 110/306

Water or steam:

(under subclass 302) Apparatus wherein the fluid being injected into the combustion chamber is water in either its liquid or gaseous state.