US PATENT SUBCLASS 202 / 249
.~.~.~.~ Rotary retort

Current as of: June, 1999
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202 /   HD   DISTILLATION: APPARATUS

81  DF  APPARATUS {4}
239  DF  .~ Elements {10}
242  DF  .~.~ Closures {5}
247  DF  .~.~.~ Horizontal retort {2}
249.~.~.~.~ Rotary retort

DEFINITION

Classification: 202/249

Patents disclosing means for closing and charging or discharging rotary cylinders which claim means for other functions than merely charging the distilland or discharging the residue.