Musical instruments – Keyboard type
Patent
1982-08-27
1985-03-19
Corrigan, Jane E.
Musical instruments
Keyboard type
Patent
active
D02780666
REFERENCES:
patent: D206683 (1967-01-01), Brodin
patent: D256366 (1980-08-01), Dworsky
Folk Music Instruments, A. Buchner, .COPYRGT.1971, Artia Prague, Photo #217, Norwegian Zither Langeleik.
Markline, Belmont, MA, Spring 1981 Catalog, front cover, Casio Item #CVL1.
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