US PATENT SUBCLASS 48 / 189
.~.~ Posterior

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

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

DEFINITION

Classification: 48/189

Devices where the air and gas or gases are mixed beyond the drum, the drum being used to force one or both of the elements.