US PATENT SUBCLASS 40 / 490
.~.~ Sliding

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

446  DF  CHANGING EXHIBITOR {25}
489  DF  .~ Interchangeable plate {1}
490.~.~ Sliding

DEFINITION

Classification: 40/490

Sliding:

(under subclass 489) Device comprising a frame provided with slide grooves or rods within or upon which are temporarily secured detached charactered plates or slides. The construction is such that the charactered plates may be changed at will.

SEE OR SEARCH THIS CLASS, SUBCLASS:

618+, for signs provided with interchangeable letters.