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Thermal broken glass spacer
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Patent number 5,088,258
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Issue date Feb 18, 1992
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Weather Shield Mfg., Inc.
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Edward L. Schield
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Entry door system
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Patent number 5,022,206
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Issue date Jun 11, 1991
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Weather Shield Mfg., Inc.
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Edward L. Schield
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS