US PATENT SUBCLASS 48 / 93
.~.~ Oil and gas injected

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

61  DF  GENERATORS {4}
89  DF  .~ Retort {12}
93.~.~ Oil and gas injected

DEFINITION

Classification: 48/93

Retorts into which oil and gas are injected.