US PATENT SUBCLASS 4 / 306
.~.~ Ventilated, i.e., noxious fume removal

Current as of: June, 1999
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4 /   HD   BATHS, CLOSETS, SINKS, AND SPITTOONS

300  DF  FLUSH CLOSET {22}
301  DF  .~ Urinals only {7}
306.~.~ Ventilated, i.e., noxious fume removal

DEFINITION

Classification: 4/306

Ventilated, i.e., noxious fume removal:

(under subclass 301) Subject matter including means for removing gases having a disagreeable odor.

(1) Note. The subject matter of this subclass is not intended to include only handling of air or gas which affects the flow of the flushing liquid or waste material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

209+, for general ventilation of this class type.

347+, for ventilation of odor from a bowl.