US PATENT SUBCLASS 48 / 78
.~.~ Water

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

61  DF  GENERATORS {4}
62 R  DF  .~ Cupola {18}
78.~.~ Water {3}
79  DF  .~.~.~> Carburetor {2}
84  DF  .~.~.~> Oil gas
82  DF  .~.~.~> Up-and-down run {1}

DEFINITION

Classification: 48/78

Cupola structures for containing a bed of incandescent fuel to which steam is admitted. This subclass includes the alternate process of first blasting with air and then decomposing steam.