Key unit for keyboard musical instrument

Details Key unit for keyboard musical instrument Key unit for keyboard musical instrument

1990-06-13

1992-02-25

Shooman, Theodore M.

Musical instruments

Keyboard type

Element or attachment

Patent

active

D03242315

REFERENCES:
patent: D297430 (1988-08-01), Beard et al.
patent: D310678 (1990-09-01), Takefuji et al.
patent: 360255 (1887-03-01), Janko
patent: 721706 (1903-03-01), Huseby
patent: 4124313 (1978-11-01), Schmidt et al.

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