US PATENT SUBCLASS 434 / 414
.~.~.~ Relatively swingable


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}
413  DF  .~.~ Separate elements having erasable surfaces {1}
414.~.~.~ Relatively swingable


DEFINITION

Classification: 434/414

Relatively swingable:

(under subclass 413) Subject matter wherein the panels can be pivoted relative to each other.