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Curtain wall panel and method
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Patent number 4,590,733
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Issue date May 27, 1986
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National Gypsum Company
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Joseph W. Schneller
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B28 - WORKING CEMENT, CLAY, OR STONE
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Tapered edge board
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Patent number 4,584,224
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Issue date Apr 22, 1986
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National Gypsum Company
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Joseph W. Schneller
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B28 - WORKING CEMENT, CLAY, OR STONE
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Exterior wall
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Patent number 4,578,915
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Issue date Apr 1, 1986
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National Gypsum Company
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Joseph W. Schneller
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B32 - LAYERED PRODUCTS
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Reinforced wallboard
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Patent number 3,967,016
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Issue date Jun 29, 1976
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National Gypsum Company
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Joseph W. Schneller
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE