US PATENT SUBCLASS 4 / 318
.~.~ Including specified filtering means

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

300  DF  FLUSH CLOSET {22}
317  DF  .~ With recirculating means {1}
318.~.~ Including specified filtering means

DEFINITION

Classification: 4/318

Including specified filtering means:

(under subclass 317) Subject matter wherein the filter is a particularly described means to remove or separate solid particles, impurities, etc., from a liquid by passing it through a porous substance.