Karl P. Ahrens

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Bloomfield, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Flutes with multiple chambers that share compound bisected toneholes
- Patent number 6,914,179
- Issue date Jul 5, 2005
- Mountain Ocarinas Inc.
- Karl P. Ahrens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Ocarinas with an inner liner and an outer shell
- Patent number 6,872,876
- Issue date Mar 29, 2005
- Mountain Ocarinas Inc.
- Karl P. Ahrens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Fipple flutes having improved airways
- Patent number 6,348,647
- Issue date Feb 19, 2002
- Karl P. Ahrens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Ocarinas with chamber extensions that distance toneholes from the f...
- Publication number 20040244562
- Publication date Dec 9, 2004
- Karl P. Ahrens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Flutes with multiple chambers that share compound bisected toneholes
- Publication number 20040003702
- Publication date Jan 8, 2004
- Karl P. Ahrens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Ocarinas with an inner liner and an outer shell
- Publication number 20030192421
- Publication date Oct 16, 2003
- Karl P. Ahrens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS