Electronic educational game housing

Details Electronic educational game housing Electronic educational game housing

1996-04-09

1997-12-23

Lucas, Susan J.

Office supplies; artists and teachers materials

Teaching material

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

D21 13, D14100, 1907

Patent

active

D03881202

REFERENCES:
patent: D309923 (1990-08-01), Cheung
patent: D318306 (1991-07-01), Cheung
patent: D345377 (1994-03-01), Poon
patent: D362870 (1995-10-01), Oikawa
patent: D369831 (1996-05-01), Chow et al.
patent: D370235 (1996-05-01), Wood
patent: D370498 (1996-06-01), Kelly

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