US PATENT SUBCLASS 434 / 424
.~.~.~ With cushion or noise muffler attached to slate frame

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}
422  DF  .~.~ Hand-carried school slate {2}
424.~.~.~ With cushion or noise muffler attached to slate frame

DEFINITION

Classification: 434/424

With cushion or noise muffler attached to slate frame:

(under subclass 422) Subject matter including a means for protecting an edging for the panel or a means for reducing the sound made by the edging when it strikes another object.