Interactive educational toy

Details Interactive educational toy Interactive educational toy

1999-06-29

2000-12-05

Holtje, Martie K.

Office supplies; artists and teachers materials

Teaching material

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

D19 59, D21475, D21600, 1907

Patent

active

D04347994

REFERENCES:
patent: D370221 (1996-05-01), Firlow
patent: D384703 (1997-10-01), Chuang
patent: D407939 (1999-04-01), Bear
patent: D410165 (1999-05-01), Bear
patent: D413149 (1999-08-01), Chan et al.
patent: 882604 (1908-03-01), Wood
patent: 4671514 (1987-06-01), Wilson-Diehl
patent: 5478240 (1995-12-01), Cogliano
patent: 5944533 (1999-08-01), Wood
patent: 5947474 (1999-09-01), Kanagawa et al.

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