John Bartholomew

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Carlsbad, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Laminated stringed instrument bow
- Patent number 7,795,515
- Issue date Sep 14, 2010
- John Bartholomew
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Braided composite stringed instrument bow
- Patent number 7,262,353
- Issue date Aug 28, 2007
- John Bartholomew
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Laminated Stringed Instrument Bow
- Publication number 20090249937
- Publication date Oct 8, 2009
- John Bartholomew
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Braided composite stringed instrument bow
- Publication number 20060101981
- Publication date May 18, 2006
- John Bartholomew
- G10 - MUSICAL INSTRUMENTS ACOUSTICS