William J. Mackenzie

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Lakeland, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Retention barrier system
- Patent number 6,444,286
- Issue date Sep 3, 2002
- William J. MacKenzie
- B32 - LAYERED PRODUCTS
Information Patent Grant
Assembly and method for attaching insulation material
- Patent number 6,324,808
- Issue date Dec 4, 2001
- Fi-Foil Company, Inc.
- William A. Lippy
- E04 - BUILDING