US PATENT SUBCLASS 48 / 73
.~.~ Coal and 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}
73.~.~ Coal and water

DEFINITION

Classification: 48/73

Cupola structures in which coal is distilled or gasified and into which steam is injected and decomposed. Water-gas may be made separately and added to the coal-gas.