US PATENT SUBCLASS 48 / 187
.~ Rotary drum

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

180.1  DF  MIXERS {9}
187.~ Rotary drum {2}
188  DF  .~.~> Anterior
189  DF  .~.~> Posterior

DEFINITION

Classification: 48/187

Bladed rotary drums located within a casing for drawing in the gases or air and gas and mixing them.