Keyboard

Details Keyboard Keyboard

1991-09-06

1993-11-16

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D03413608

REFERENCES:
patent: D292706 (1987-11-01), Fischer
patent: D308855 (1990-06-01), Schaum
patent: D310069 (1990-08-01), Leone et al.
patent: D310516 (1990-09-01), Hara et al.
patent: D327881 (1992-07-01), McFarlane
patent: D329848 (1992-09-01), Mizusugi et al.
patent: D330907 (1992-11-01), Burke

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