Children's computer keyboard

Details Children's computer keyboard Children's computer keyboard

1991-02-22

1993-06-15

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D19 60

Patent

active

D03364682

REFERENCES:
patent: D256028 (1980-07-01), Lawrence et al.
patent: D280217 (1985-08-01), Tomozawa et al.
patent: D310071 (1990-08-01), Kit
patent: D317176 (1991-05-01), Cheung
patent: D320598 (1991-10-01), Auerbach et al.
patent: D322801 (1991-12-01), Vale
patent: 1328818 (1920-01-01), Butler
patent: 4773783 (1988-09-01), Dickie
patent: 4830525 (1989-05-01), Nagashima
patent: 5059048 (1991-10-01), Sirkin
patent: 5119078 (1992-06-01), Grant

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