US PATENT SUBCLASS 4 / 209 FF
.~ With fluid filter

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

209 R  DF  VENTILATION {10}
209 FF.~ With fluid filter

Unofficial Alpha Subclasses: R FF

DEFINITION

Classification: 4/209

The general miscellaneous subclass for devices for ventilation of apparatus included in this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

111.1+, for ventilation of a dry closet having heating means to dry or burn human waste material.

219+, for ventilation of a sewer.

306, for ventilation (i.e., noxious fume removal) of a urinal type flush closet.

347+, for ventilation (i.e., noxious fume removal) of a flush closet.

472, for ventilation of a dry closet having a valved bowl.

475, for ventilation of a dry closet having a two receptacles, one being a subchamber.

477, for ventilation of a dry closet having a receptacle inside an enclosure that includes a closet seat.

479, for ventilation of a dry closet having a receptacle such as a bowl, pot, bag, or etc.

SEE OR SEARCH CLASS

454, Ventilation, for ventilating devices not peculiar to subject matter of this class, particularly

341+, for ventilating devices which exhaust stale air from a room.