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Metal roofing system
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Patent number 11,987,985
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Issue date May 21, 2024
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Milliken & Company
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David E. Wenstrup
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E04 - BUILDING
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Roofing systems and methods
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Patent number 10,087,634
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Issue date Oct 2, 2018
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Johns Manville
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Walter Alexander Johnson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Roofing systems and methods
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Patent number 9,909,317
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Issue date Mar 6, 2018
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Johns Manville
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Walter Alexander Johnson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3919822
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Patent number 3,919,822
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Issue date Nov 18, 1975
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E04 - BUILDING
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3551274
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3461628
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Issue date Aug 19, 1969
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E04 - BUILDING
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2711702
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Issue date Jun 28, 1955
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E04 - BUILDING