Re-usable writing surface

Details Re-usable writing surface Re-usable writing surface

2000-05-22

2003-06-24

Nguyen, Kien T. (Department: 3712)

Education and demonstration

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

Chalkboard or equivalent means having easily erasable surface

C434S415000, C434S419000

Reexamination Certificate

active

06582236

ABSTRACT:

SUMMARY OF THE INVENTION
The present invention discloses an erasable writing surface assembly where the writing surface has been sufficiently modified to sufficiently reduce smudging but allowing for erasing. The assembly is configured for the particular application. For example, the writing surface assembly may be sized to be able to fit into a shirt pocket. The writing surface assembly may also be designed with any desired graphics to meet the desired application.


REFERENCES:
patent: 3512273 (1970-05-01), Baker, Jr. et al.
patent: 4976647 (1990-12-01), Axtell
patent: 5024895 (1991-06-01), Kavanagh et al.
patent: 5727818 (1998-03-01), Schmeida
patent: 5791910 (1998-08-01), Masson et al.
patent: 5860235 (1999-01-01), Bilbie et al.
patent: 5938449 (1999-08-01), Masson et al.
patent: 6067266 (2000-05-01), Donelan
patent: 6308445 (2001-10-01), Porraro

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