Double-sided clear writing slate and base

Details Double-sided clear writing slate and base Double-sided clear writing slate and base

2007-10-17

2008-09-30

Albert, Elizabeth A (Department: 2913)

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Writing or drawing surface, e.g., blackboard, drawing board,...

Design Patent

active

D0577769

CLAIM:
The ornamental design for a double-sided clear writing slate and base, as shown and described.

REFERENCES:
patent: D185295 (1959-05-01), Marano
patent: D194008 (1962-11-01), Bishop
patent: D270356 (1983-08-01), Beltrami
patent: 4833279 (1989-05-01), Chen et al.
patent: D315366 (1991-03-01), Greenspahn
patent: D532048 (2006-11-01), Delaney
patent: D535335 (2007-01-01), Mandel
patent: D543209 (2007-05-01), Bae
patent: D555162 (2007-11-01), Park et al.

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