Writing board structure

Details Writing board structure Writing board structure

2007-03-27

2007-03-27

Fernstrom, Kurt (Department: 3714)

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Chalkboard or equivalent means having easily erasable surface

Reexamination Certificate

active

10388805

ABSTRACT:
A writing board structure includes a frame, a writing tablet of glass, and a background piece corresponding in size and shape to the writing tablet. The writing tablet and the background piece are held together in the frame such that a rear surface of the writing tablet comes in contact with a front surface of the background piece. The front surface of the background piece is provided with a white coating which is intended to furnish a front surface of the writing tablet with a white background. The front surface of the writing tablet is used for writing or drawing erasably with a pen, chalk, or the like.

REFERENCES:
patent: 144212 (1873-11-01), Lyon
patent: 266118 (1882-10-01), Elsey
patent: 323350 (1885-07-01), McKenzie
patent: 2264244 (1941-11-01), Lytle
patent: 2303120 (1942-11-01), Greaves-Walker
patent: 3846011 (1974-11-01), Stein
patent: 4123590 (1978-10-01), Hasegawa et al.
patent: 4797106 (1989-01-01), Umehara et al.
patent: 4940628 (1990-07-01), Lin et al.
patent: 5176522 (1993-01-01), Robertson, Jr.
patent: 5716217 (1998-02-01), Imagawa et al.
patent: 6506058 (2003-01-01), Frances

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