Office supplies; artists and teachers materials – Teaching material – Sensory feedback – e.g. – audio-visual teaching machine
Patent
1992-11-13
1994-08-16
Gandy, James M.
Office supplies; artists and teachers materials
Teaching material
Sensory feedback, e.g., audio-visual teaching machine
D21 13, D14106
Patent
active
D03497305
REFERENCES:
patent: D310071 (1990-08-01), Kit
patent: D321377 (1991-11-01), Ko
patent: D330703 (1992-11-01), Cheung et al.
patent: D335909 (1993-05-01), Swanson et al.
1989 Video Technology Industries, Inc. Catalog, p. 6.
1991 Video Technology Electronics, Ltd. Ctalog, p. 5, top item.
Advantech Flyer for "I.Q. Unlimited" (1991).
Burgess Pamela
Gandy James M.
VTECH Industries, Inc.
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