Education and demonstration – Means for demonstrating apparatus – product – or surface... – Chalkboard or equivalent means having easily erasable surface
Patent
1996-07-19
1998-03-17
Hirsch, Paul J.
Education and demonstration
Means for demonstrating apparatus, product, or surface...
Chalkboard or equivalent means having easily erasable surface
434415, B43L 106
Patent
active
057279527
ABSTRACT:
A dry marker board including a sheet of material having a writing surface upon which felt tip, erasable ink markers may be used. Preferably, the writing sheet is a sheet of ceramic-on-steel material. A shelf support, preferably made of wood, is mounted on the bottom portion of the writing sheet by fasteners such as nails or screws. Polyurethane is injection molded around the peripheral edge of the writing sheet, encapsulating the peripheral edge and sides of the writing sheet and the shelf support to form a unitary frame with a shelf.
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Hoffman Jeff H.
Klein Michael N.
Schenck Robert
Classic Modular Systems, Inc.
Hirsch Paul J.
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