US PATENT SUBCLASS 48 / 89
.~ Retort

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

61  DF  GENERATORS {4}
89.~ Retort {12}
98  DF  .~.~> Coal, oil and water
99  DF  .~.~> Coal and water
100  DF  .~.~> Coal and oil
101  DF  .~.~> Coal
102 R  DF  .~.~> Oil {6}
108  DF  .~.~> Water {2}
111  DF  .~.~> Wood {1}
92  DF  .~.~> Metal bath
93  DF  .~.~> Oil and gas injected
94  DF  .~.~> Oil and steam injected {2}
90  DF  .~.~> Domestic plants
113  DF  .~.~> Furnaces

DEFINITION

Classification: 48/89

Closed heated retorts for the gasification of carbonaceous material not otherwise classifiable.