Musical instruments – Keyboard type
Patent
1987-12-07
1990-11-20
Ansher, Bernard
Musical instruments
Keyboard type
Patent
active
D03122646
REFERENCES:
patent: D254496 (1980-03-01), Hill
patent: D296338 (1988-06-01), Sgroi
patent: 4126070 (1978-11-01), Hill
patent: 4570521 (1986-02-01), Fox
Ansher Bernard
Aronovich Adir
Yamaha Corporation
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