Electronic keyboard instrument

Details Electronic keyboard instrument Electronic keyboard instrument

1986-08-28

1988-03-15

Witkowski, Stanley J.

Music

Accessories

Teaching devices

84470R, 84477R, G09B 1502

Patent

active

047305339

ABSTRACT:
A keyboard instrument having a plurality of keys which upon actuation each generate a tone correlated to the respective key, and having a plurality of optical display means on each of said keys, said display means indicating the sequence of the keys to be actuated.

REFERENCES:
patent: 2788699 (1957-04-01), Pipkin
patent: 3377716 (1968-04-01), Schmoyer
patent: 3731582 (1973-05-01), Gullickson
patent: 3837256 (1974-09-01), Gullickson
patent: 3881390 (1975-05-01), Gullickson
patent: 3895555 (1975-07-01), Peterson et al.
patent: 4061072 (1977-12-01), del Castillo
patent: 4286495 (1981-09-01), Roof
patent: 4480521 (1984-11-01), Schmoyer

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