US PATENT SUBCLASS 40 / 767
.~.~.~ Including biasing means

Current as of: June, 1999
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40 /   HD   CARD, PICTURE, OR SIGN EXHIBITING

700  DF  PICTURE FRAME {29}
765  DF  .~ Slidably received article {1}
766  DF  .~.~ Insertion opening with peripheral closure means {1}
767.~.~.~ Including biasing means

DEFINITION

Classification: 40/767

Including biasing means:

(under subclass 766) Frame structure comprising a resilient member which urges the closure towards either an open or closed state.