US PATENT SUBCLASS 40 / 525
.~.~ Driven by frictional contact

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

446  DF  CHANGING EXHIBITOR {25}
524  DF  .~ Endless conveyor {4}
525.~.~ Driven by frictional contact

DEFINITION

Classification: 40/525

Driven by frictional contact:

(under subclass 524) Device wherein the conveyor is moved by intimate anti-slip contact with a substantially smooth roller.