Flute

Musical instruments – Wind instrument

Patent

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D1702

Patent

active

D02721597

REFERENCES:
patent: 3815466 (1974-06-01), Johnson
Wm. Kratt Co., Union, N.J., "Pitch Instruments" Advertising Sheet From Cat. #61564-P, Master Key Chromatic Pitch Instrument, #'s MK1-MK3.
Handbook of Designs and Devices, C. P. Hornung, .COPYRGT.59, Dover, N.Y., p. 1, Design #2.

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