US PATENT SUBCLASS 34 / 548
.~.~ Of gas mixing

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
524  DF  .~ With automatic control {11}
548.~.~ Of gas mixing

DEFINITION

Classification: 34/548

Of gas mixing:

(under subclass 524) Apparatus in which the mixing of two or more gases (with or without their contained vapors) is controlled.