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Dale H. Walton
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Royersford, PA, US
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last 30 patents
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Patent Grant
Roofing shingles with reduced usage of conventional shingle materia...
Patent number
8,925,272
Issue date
Jan 6, 2015
CertainTeed Corporation
Anna M. Amatruda
E04 - BUILDING
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Patent Grant
Roofing shingles with reduced usage of conventional shingle materia...
Patent number
8,898,963
Issue date
Dec 2, 2014
CertainTeed Corporation
Anna M. Amatruda
E04 - BUILDING
Information
Patent Grant
Roofing shingles with reduced usage of conventional shingle materia...
Patent number
8,898,987
Issue date
Dec 2, 2014
CertainTeed Corporation
Anna M. Amatruda
E04 - BUILDING