David J. Brace

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Grosse Point, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Piezo integrated flat speakers for automotive interior panels
- Patent number 6,639,988
- Issue date Oct 28, 2003
- Delphi Technologies, Inc.
- Mansour Ashtiani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Piezo integrated flat speakers for automotive interior panels
- Publication number 20020076061
- Publication date Jun 20, 2002
- Mansour Ashtiani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE