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Charles Henry Grace
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Lakewood, OH, US
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Patents Grants
last 30 patents
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Patent Grant
Musical wind instrument with electronic tuning
Patent number
8,569,605
Issue date
Oct 29, 2013
Charles Henry Grace
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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last 30 patents
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Patent Application
Musical instrument with electronic tuning
Publication number
20130014631
Publication date
Jan 17, 2013
Charles Henry Grace
G10 - MUSICAL INSTRUMENTS ACOUSTICS