US PATENT SUBCLASS 48 / 214 A
.~.~ Catalytic processes

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}
214 A.~.~ Catalytic processes

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 48/214

Processes wherein oil and steam or water are injected into a highly heated retort.