US PATENT SUBCLASS 434 / 412
.~.~ Erasable surface on reel-mounted sheet

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

365  DF  MEANS FOR DEMONSTRATING APPARATUS, PRODUCT, OR SURFACE CONFIGURATION, OR FOR DISPLAYING EDUCATION MATERIAL OR STUDENT'S WORK {37}
408  DF  .~ Chalkboard or equivalent means having easily erasable surface {14}
412.~.~ Erasable surface on reel-mounted sheet

DEFINITION

Classification: 434/412

Erasable surface on reel-mounted sheet:

(under subclass 408) Subject matter wherein the erasable surface is on a thin, flexible panel wound on a reel.