James L. Smith

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Maple Grove, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Weatherproof sound attenuating device
- Patent number 6,457,550
- Issue date Oct 1, 2002
- Twin City Fan Companies, Ltd.
- Charles L. Barry
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Weatherproof sound attenuating device
- Publication number 20020125068
- Publication date Sep 12, 2002
- Twin City Fan Companies , Ltd.
- Charles L. Barry
- F24 - HEATING RANGES VENTILATING