William O. Doerring

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Stillwater, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Ultra low frequency transducer and loud speaker comprising same
- Patent number 8,023,688
- Issue date Sep 20, 2011
- Stillwater Designs & Audio, Inc.
- Steven M. Irby
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ULTRA LOW FREQUENCY TRANSDUCER AND LOUD SPEAKER COMPRISING SAME
- Publication number 20080118098
- Publication date May 22, 2008
- Stillwater Designs & Audio, Inc.
- Steven M. Irby
- H04 - ELECTRIC COMMUNICATION TECHNIQUE