US PATENT SUBCLASS 4 / 575.1
.~.~.~.~ Head or back

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

538  DF  TUBS {9}
559  DF  .~ Convenience accessories {4}
571.1  DF  .~.~ Support for user, static {2}
573.1  DF  .~.~.~ Body type {4}
575.1.~.~.~.~ Head or back

DEFINITION

Classification: 4/575.1

Head or back:

(under subclass 573.1) Subject matter wherein the user's head or back is held or rests on the support means.