Music transposer

Musical instruments – Miscellaneous

Patent

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Details

84474, 84485R

Patent

active

D03563308

REFERENCES:
patent: D298837 (1988-12-01), Thomas
patent: D334765 (1993-04-01), Dunn, Jr. et al.
patent: 1587928 (1926-06-01), Thompson
patent: 3731581 (1973-05-01), Griffin
patent: 3903782 (1975-09-01), Leonard
patent: 4305323 (1981-12-01), Graham
patent: 4716806 (1988-01-01), Forrest
patent: 4748890 (1988-06-01), Tutaj
patent: 4819539 (1989-04-01), Searing
patent: 4887507 (1989-12-01), Shaw
patent: 4905567 (1990-03-01), Kavoklis et al.
Brochure distributed by American Inventors Corporation approximately during Apr., 1992.

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