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Foldable security bar assembly
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Patent number 6,035,917
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Issue date Mar 14, 2000
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Ravco Innovations, Inc.
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Moshe Cohen-Ravid
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Security bar assembly
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Patent number 5,957,181
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Issue date Sep 28, 1999
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Ravco Innovations, Inc.
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Moshe Cohen-Ravid
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS