Interactive play and learning system

Details Interactive play and learning system Interactive play and learning system

2011-03-29

2011-03-29

Nelson, T. Chase (Department: 2914)

Office supplies; artists and teachers materials

Teaching material

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

Design Patent

active

D0635190

CLAIM:
The ornamental design for an interactive play and learning system, as shown and described.

REFERENCES:
patent: D329062 (1992-09-01), Chin
patent: 5263865 (1993-11-01), Zipf
patent: 5865625 (1999-02-01), Baskerville
patent: D447179 (2001-08-01), Lusala
patent: D537119 (2007-02-01), Traub
patent: D557338 (2007-12-01), Delman et al.
patent: D583416 (2008-12-01), Cisneros
patent: D601628 (2009-10-01), Escobar
patent: D619652 (2010-07-01), Voss
patent: 2008/0113321 (2008-05-01), Kelley et al.

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