Visual aid system

Education and demonstration – Means for demonstrating apparatus – product – or surface... – Chalkboard or equivalent means having easily erasable surface

Patent

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Details

434421, 434430, B43L 100

Patent

active

053932323

ABSTRACT:
A visual aid system including a plasticized fabric covered fiberboard magnetic panel with the fiberboard having vertically extending and horizontally spaced strip magnets imbedded in the surface thereof and being secured at its rear surface to a supporting wall. A display panel made or porcelain enameled steel is magnetically attached to the magnetic panel. A tack panel is carried to the supporting wall and a cork panel is disposed between and is carried by said magnetic panel and said tack panel.

REFERENCES:
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patent: 2600505 (1952-06-01), Jones
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patent: 3150296 (1964-09-01), McIntosh
patent: 3336682 (1967-08-01), Genin
patent: 4060246 (1977-11-01), Ward
patent: 4584223 (1986-04-01), Krapf
patent: 4717109 (1988-01-01), Johnston
patent: 5295342 (1994-03-01), Roche et al.

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