PI illustration display device

Details PI illustration display device PI illustration display device

2006-11-07

2006-11-07

Delehanty, Robert A. (Department: 2914)

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

Design Patent

active

D0531672

CLAIM:
The ornamental design for a PI illustration display device, as shown.

REFERENCES:
patent: 4400162 (1983-08-01), Rustemis
patent: 5470234 (1995-11-01), Sher
patent: 5823783 (1998-10-01), Adams
patent: 6293800 (2001-09-01), Robertson
patent: D474250 (2003-05-01), Herrera
patent: D486183 (2004-02-01), DeMaison
patent: 7025593 (2006-04-01), Bauldock, Sr.

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