Alfred Christian Walton

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Belmont, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Ear coupler
- Patent number 7,198,133
- Issue date Apr 3, 2007
- Jessica Ash Warring
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ear coupler
- Patent number 6,832,663
- Issue date Dec 21, 2004
- Natus Medical Inc.
- Jessica Ash Warring
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ear coupler
- Patent number D469873
- Issue date Feb 4, 2003
- Natus Medical Inc.
- Jessica Ash Warring
- D24 - Medical and laboratory equipment
Information Patent Grant
Hearing evaluation device with patient connection evaluation capabi...
- Patent number 6,475,163
- Issue date Nov 5, 2002
- Natus Medical, Inc.
- Matthijs P. Smits
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Ear coupler
- Publication number 20040216947
- Publication date Nov 4, 2004
- Natus Medical Inc.
- Jessica Ash Warring
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Ear coupler
- Publication number 20030037988
- Publication date Feb 27, 2003
- Jessica Ash Warring
- H04 - ELECTRIC COMMUNICATION TECHNIQUE