US PATENT SUBCLASS 4 / 216
.~ Bowl structure or vent valve

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


4 /   HD   BATHS, CLOSETS, SINKS, AND SPITTOONS

209 R  DF  VENTILATION {10}
216.~ Bowl structure or vent valve

DEFINITION

Classification: 4/216

The general miscellaneous structure of a bowl provided with a ventilator, not provided for in preceding subclasses. Also includes the valve structure controlling the vent pipe.

SEE OR SEARCH THIS CLASS, SUBCLASS:

348+, for a flush closet with a ventilated bowl.