US PATENT SUBCLASS 40 / 374
.~.~ Sliding item

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

371  DF  REGISTER, OR FILE (E.G., TELEPHONE DIRECTORY FILE) {8}
373  DF  .~ Interchangeable file item {1}
374.~.~ Sliding item

DEFINITION

Classification: 40/374

Sliding item:

(under subclass 373) Device comprising a structure provided with slide grooves or rods within or upon which is temporarily secured a detached charactered plate or slide. The construction is such that the charactered slide may be changed readily.

SEE OR SEARCH THIS CLASS, SUBCLASS:

490, for a similar changing exhibitor.

618, for a sign provided with interchangeable letters.