US PATENT SUBCLASS 48 / 75
.~.~ Oil and steam injected

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

61  DF  GENERATORS {4}
62 R  DF  .~ Cupola {18}
75.~.~ Oil and steam injected

DEFINITION

Classification: 48/75

Cupola structures adapted for injection of oil or oil-vapor and steam into incandescent coal.