US PATENT SUBCLASS 40 / 713
.~ With level indication means

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

700  DF  PICTURE FRAME {29}
713.~ With level indication means

DEFINITION

Classification: 40/713

With leveling indication means:

(under subclass 700) Picture frame combined with a means to display the picture frame alignment relative to a horizontal plane.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

403+, for a level indicator, per se.