US PATENT SUBCLASS 4 / 323
.~.~ And valve for emptying

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

300  DF  FLUSH CLOSET {22}
321  DF  .~ With holding tank {2}
323.~.~ And valve for emptying

DEFINITION

Classification: 4/323

And valve for emptying:

(under subclass 321) Subject matter including means by which the flow of waste material from the tank may be started or regulated.