Kenneth A. Ullrich

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Wenatchee, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Anti-viral acoustically transparent earphone cover
- Patent number 5,545,859
- Issue date Aug 13, 1996
- Kenneth A. Ullrich
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ASSISTIVE LISTENING SYSTEM AND METHOD FOR TELEVISION, RADIO & MUSIC...
- Publication number 20160094920
- Publication date Mar 31, 2016
- Kenneth A. Ullrich
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
ASSISTIVE LISTENING SYSTEM AND METHOD FOR TELEVISION, RADIO & MUSIC...
- Publication number 20140301584
- Publication date Oct 9, 2014
- Kenneth A. Ullrich
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
ASSISTIVE-LISTENING SYSTEM AND METHOD FOR TELEVISION, RADIO & MUSIC...
- Publication number 20110216919
- Publication date Sep 8, 2011
- KENNETH A. ULLRICH
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ASSISTIVE-LISTENING SYSTEM AND METHOD FOR TELEVISION, RADIO & MUSIC...
- Publication number 20080069379
- Publication date Mar 20, 2008
- Kenneth A. Ullrich
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Assistive-listening system and method for television, radio & music...
- Publication number 20020126859
- Publication date Sep 12, 2002
- Kenneth A. Ullrich
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
ASSISTIVE LISTENING SYSTEM AND METHOD FOR TELEVISION, RADIO AND MUS...
- Publication number 20010055399
- Publication date Dec 27, 2001
- KENNETH A. ULLRICH
- G10 - MUSICAL INSTRUMENTS ACOUSTICS