Piano-like computer keys

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment

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D03678580

REFERENCES:
patent: D345967 (1994-04-01), Kroner
patent: D358808 (1995-05-01), Murdoch et al.
patent: 4352313 (1982-10-01), Ny
patent: 4655117 (1987-04-01), Roose
patent: 4704940 (1987-11-01), Cummings
patent: 5088378 (1992-02-01), DeLaTorre
patent: 5392682 (1995-02-01), McCartney-Hoy
Customizable Keys Using Add-On "Plugs", IBM Technical Disclosure Bulletin, vol. 33, No. 1B, Jun., 1990.

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