US PATENT SUBCLASS 4 / 593
.~.~.~ For strengthening bottom or side

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

538  DF  TUBS {9}
584  DF  .~ Particular construction or configuration details {5}
592  DF  .~.~ Support structure {2}
593.~.~.~ For strengthening bottom or side

DEFINITION

Classification: 4/593

For strengthening bottom or side:

(under subclass 592) Subject matter wherein the tub has ribs, ridges or such, on the bottom or side surface to resist strain, stress, or such.