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Insulating glass spacer construction
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Patent number 11,193,324
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Issue date Dec 7, 2021
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ALLMETAL Inc.
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Gary R. Matthews
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Spacer bar connector
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Patent number 7,908,820
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Issue date Mar 22, 2011
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Allmetal, Inc.
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Vincent R. Catalano
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Connection for tubular muntin bars
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Patent number 5,099,626
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Issue date Mar 31, 1992
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Allmetal Inc.
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Robert Seeger
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS