David Coontz

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Corydon, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Capo
- Patent number 5,792,969
- Issue date Aug 11, 1998
- Richard Shubb
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Capo
- Patent number 4,250,790
- Issue date Feb 17, 1981
- Richard Shubb
- G10 - MUSICAL INSTRUMENTS ACOUSTICS