Electronic book with display screen

Details Electronic book with display screen Electronic book with display screen

1994-09-01

1995-09-12

Word, A. Hugo

Office supplies; artists and teachers materials

Teaching material

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

D14106, D21 13, D18 7

Patent

active

D03622720

REFERENCES:
patent: D300534 (1989-04-01), Luong
patent: D312831 (1990-12-01), Sawada et al.
patent: D321016 (1991-10-01), Leung
patent: D324513 (1992-03-01), Sakaguchi et al.
patent: D324673 (1992-03-01), Iims
patent: D337099 (1993-06-01), Dornback et al.
patent: D339112 (1993-09-01), Foy et al.
patent: D340917 (1993-11-01), Sakaguchi et al.
patent: D341573 (1993-11-01), Sakaguchi et al.
patent: D348439 (1994-07-01), Luong
patent: D349278 (1994-08-01), Wetrin

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