US PATENT SUBCLASS 48 / 100
.~.~ Coal and oil

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

61  DF  GENERATORS {4}
89  DF  .~ Retort {12}
100.~.~ Coal and oil

DEFINITION

Classification: 48/100

Combined retorts for gasifying coal and means for introducing oil therein or for combining the coal and oil gas.