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Automatic door sweep
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Patent number 5,522,180
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Issue date Jun 4, 1996
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Adler; Richard S.
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Richard S. Adler
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Automatic door sweep
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Patent number 5,454,192
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Issue date Oct 3, 1995
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Adler; Richard S.
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Richard S. Adler
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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