US PATENT SUBCLASS 40 / 618
.~ Interchangeable

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

584  DF  SIGNS {26}
618.~ Interchangeable {2}
619  DF  .~.~> Glass
620  DF  .~.~> Fastener {3}

DEFINITION

Classification: 40/618

Interchangeable:

(under subclass 584) Device comprising letters of a miscellaneous character constructed to be arranged together upon a suitable support to form the design or legend, and fastening devices for such letters special thereto.