Keyboard

Details Keyboard Keyboard

1989-03-17

1991-08-06

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D14115

Patent

active

D03188574

REFERENCES:
patent: D285793 (1986-09-01), Moggridge
patent: D291574 (1987-08-01), Kim
patent: D292289 (1987-10-01), Kawarabayashi et al.
patent: D299029 (1988-12-01), Williams
patent: D308360 (1990-06-01), Schaum
patent: D308668 (1990-06-01), Briscoe et al.
patent: D312625 (1990-12-01), Wetzel

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