Flexible writing surface
AssigneeHach Associates, Inc.
InventorRobert C. Postma
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Abstract
A flexible writing surface including a coated flexible substrate having a dust collecting cuff around the perimeter thereof to prevent the scattering of chalk dust during use.
Claims9
A flexible writing surface comprising a four-sided flexible sheet material having a coating composition thereon characterized by its adherence to said flexible sheet material so as to provide a durable chalk writing and marking surface thereon, said flexible writing surface further comprising flexible dust collecting means extending along and adjacent to at least two sides of said flexible sheet material.
A flexible writing surface comprising a four-sided flexible sheet material having a coating composition thereon characterized by its adherence to said flexible sheet material so as to provide a durable chalk writing and marking surface thereon, said flexible writing surface further comprising a flexible dust collecting cuff extending around the entire perimeter of said flexible sheet material.
Dependencies are inferred from the claim text.