US PATENT SUBCLASS 422 / 306
.~ Including means for adding a material to a gas

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

243  DF  PHYSICAL TYPE APPARATUS {8}
306.~ Including means for adding a material to a gas

DEFINITION

Classification: 422/306

Including means for adding a material to a gas:

(under subclass 243) Apparatus having means for adding material to the gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4, for process of adding material to a gas to treat the same.

28, for process involving the addition of a disinfecting or sterilizing agent to steam.

123, for apparatus for adding a material to a life-sustaining gas.