Doug Kramer

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Bellingham, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Narrow opening electroacoustical transducing
- Patent number 7,463,746
- Issue date Dec 9, 2008
- Bose Corporation
- Gerald F. Caron
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Narrow opening electroacoustical transducing
- Publication number 20050259841
- Publication date Nov 24, 2005
- Gerald F. Caron
- H04 - ELECTRIC COMMUNICATION TECHNIQUE