John R. David

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Medford, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Dynamic bass boost apparatus and method
- Patent number 7,171,010
- Issue date Jan 30, 2007
- Boston Acoustics, Inc.
- Stephen L. Martin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Pivotable speaker mounting apparatus
- Patent number 6,792,125
- Issue date Sep 14, 2004
- Boston Acoustics, Inc.
- John R. David
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Dynamic bass boost apparatus and method
- Publication number 20050058303
- Publication date Mar 17, 2005
- Stephen L. Martin
- H03 - BASIC ELECTRONIC CIRCUITRY