US PATENT SUBCLASS 4 / 337
.~.~.~.~ And drain means
Current as of:
June, 1999
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4 /
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BATHS, CLOSETS, SINKS, AND SPITTOONS
300
DF
FLUSH CLOSET
{22}
333
DF
.~ Normally empty tank {2}
334
DF
.~.~ Pressure tank {1}
335
DF
.~.~.~ With seat-actuated valve {2}
337
.~.~.~.~ And drain means
DEFINITION
Classification: 4/337
And drain means:
(under subclass 335) Subject matter having means to drain the liquid from the tank supply and/or valves after a flush.
SEE OR SEARCH THIS CLASS, SUBCLASS:
339, for drain means where the tank is not under pressure.
SEE OR SEARCH CLASS
137, Fluid Handling,
302, for freeze protection means.