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Vacuum IG unit with colored spacers
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Patent number 6,497,931
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Issue date Dec 24, 2002
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Guardian Industries Corp.
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Steven L. Aggas
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Vacuum IG unit with micro-sized spacers
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Patent number 6,372,312
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Issue date Apr 16, 2002
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Guardian Industries Corp.
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Steven L. Aggas
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Vacuum IG unit with transparent spacers
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Patent number 6,352,749
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Issue date Mar 5, 2002
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Guardian Industries Corp.
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Steven L. Aggas
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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