Educational device

Details Educational device Educational device

2007-12-11

2007-12-11

Delehanty, Robert A. (Department: 2914)

Office supplies; artists and teachers materials

Teaching material

Sensory feedback, e.g., audio-visual teaching machine

Design Patent

active

29276684

CLAIM:
The ornamental design for educational device, as shown and described.

REFERENCES:
patent: 5636995 (1997-06-01), Sharpe et al.
patent: D381685 (1997-07-01), Mah
patent: D407748 (1999-04-01), Tsang et al.
patent: D413941 (1999-09-01), Ko
patent: D453195 (2002-01-01), Chan
patent: D453793 (2002-02-01), Hou
patent: D487118 (2004-02-01), Elias
patent: D503196 (2005-03-01), Blanchette
patent: D531668 (2006-11-01), Goodstriker et al.
patent: D531669 (2006-11-01), Gordon et al.
patent: D537119 (2007-02-01), Traub
patent: D538347 (2007-03-01), Davis

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