US PATENT SUBCLASS 40 / 513
.~.~ Reciprocating

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

446  DF  CHANGING EXHIBITOR {25}
508  DF  .~ Shiftable display item or item support {2}
513.~.~ Reciprocating

DEFINITION

Classification: 40/513

Reciprocating:

(under subclass 508) Device wherein the item is returned to substantially its initial position after exposure thereof.