Matthew Grant

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Arnprior, CA

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Patents Grantslast 30 patents

Information Patent Grant
Ceiling or wall-mounted loudspeaker system with anti-diffraction wa...
- Patent number 8,014,545
- Issue date Sep 6, 2011
- DEI Headquarters, Inc.
- Matthew Grant
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Ceiling or wall-mounted loudspeaker system with anti-diffraction wa...
- Publication number 20080144873
- Publication date Jun 19, 2008
- DEI Headquarters Inc.
- Matthew Grant
- H04 - ELECTRIC COMMUNICATION TECHNIQUE