US PATENT SUBCLASS 48 / 102 R
.~.~ Oil

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

61  DF  GENERATORS {4}
89  DF  .~ Retort {12}
102 R.~.~ Oil {6}
103  DF  .~.~.~> Electric heater
104  DF  .~.~.~> Jet mixers
105  DF  .~.~.~> Steam injected
106  DF  .~.~.~> Automatic feed
107  DF  .~.~.~> Air injected
102 A  DF  .~.~.~> Utilizing heat from exhaust gases

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 48/102

Retorts containing a body of oil or into which oil is injected.

SEE OR SEARCH CLASS

123, Internal-Combustion Engines,

568.11+, for a vapor generator forming a part of an explosive engine.

431, Combustion,

207+, for a burner fed by a retort and for a retort utilizing heat derived from the generated gas. However, where an unburned portion of the gas generated in the retort is purified, fixed or stored classification is in appropriate subclass of Class 48.