US PATENT SUBCLASS 4 / 439
.~.~.~.~.~ With additional valve (e.g., draft control)

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

300  DF  FLUSH CLOSET {22}
420  DF  .~ Bowl {7}
434  DF  .~.~ Valved dischage {2}
435  DF  .~.~.~ With flush supply actuated by valved discharge {3}
438  DF  .~.~.~.~ Pivoted valve {2}
439.~.~.~.~.~ With additional valve (e.g., draft control)

DEFINITION

Classification: 4/439

With additional valve (e.g., draft control):

(under subclass 438) Subject matter including another valve.