US PATENT SUBCLASS 434 / 423
.~.~.~ With rigid corner cap or separate means holding slate frame elements together


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}
423.~.~.~ With rigid corner cap or separate means holding slate frame elements together


DEFINITION

Classification: 434/423

With rigid corner cap or separate means holding slate frame elements together:

(under subclass 422) Subject matter including a stiff means which covers a point where edging members for the panel meet or a means which secures such edging members together.

SEE OR SEARCH CLASS

403, Joints and Connections, appropriate subclasses for means for securing frame elements together.