US PATENT SUBCLASS 40 / 471
.~.~ Double reel and web


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

446  DF  CHANGING EXHIBITOR {25}
470  DF  .~ Motor operated {4}
471.~.~ Double reel and web


DEFINITION

Classification: 40/471

Double reel and web:

(under subclass 470) Exhibitor in which the display device is a charactered web or chain of charactered plates, each end of such web being connected to a roller and at least one of the rollers is caused to rotate by the motor means thus presenting different portions of the web for observation.