US PATENT SUBCLASS 4 / 475
.~.~ Ventilated

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

449  DF  DRY CLOSETS {14}
474  DF  .~ Vault type {1}
475.~.~ Ventilated

DEFINITION

Classification: 4/475

Ventilated:

(under subclass 474) Subject matter including means for removing gases having a disagreeable odor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

472, for a ventilated valve bowl, and see search notes for ventilation.