Shannon L. Dowdell

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Indianapolis, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Anti-fog face mask
- Patent number 6,520,181
- Issue date Feb 18, 2003
- 3M Innovative Properties Company
- Nicholas R. Baumann
- A41 - WEARING APPAREL
Information Patent Grant
Anti-fog face mask
- Patent number 6,354,296
- Issue date Mar 12, 2002
- 3M Innovative Properties Company
- Nicholas R. Baumann
- A41 - WEARING APPAREL
Information Patent Grant
Liquid resistant face mask having surface energy reducing agent on...
- Patent number 5,706,804
- Issue date Jan 13, 1998
- Minnesota Mining and Manufacturing Company
- Nicholas R. Baumann
- A41 - WEARING APPAREL

Patents Applicationslast 30 patents

Information Patent Application
Anti-fog face mask
- Publication number 20020046754
- Publication date Apr 25, 2002
- 3M Innovative Properties Company
- Nicholas R. Baumann
- A41 - WEARING APPAREL