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DOUGLAS PETER HORSLEY
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CALGARY, CA
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last 30 patents
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Patent Grant
Adjustable chromatic chord harmonica
Patent number
8,217,247
Issue date
Jul 10, 2012
Douglas Peter Horsley
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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last 30 patents
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Patent Application
ADJUSTABLE CHROMATIC CHORD HARMONICA
Publication number
20100236378
Publication date
Sep 23, 2010
DOUGLAS PETER HORSLEY
G10 - MUSICAL INSTRUMENTS ACOUSTICS