US PATENT SUBCLASS 48 / 215
.~.~ Air

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

197 R  DF  PROCESSES {15}
214 R  DF  .~ Oil and steam injected {2}
215.~.~ Air

DEFINITION

Classification: 48/215

Processes wherein oil, steam, and air are injected into a highly heated retort. The air may be added to and mixed with the gas resulting from the decomposition of the oil and steam or water.