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Foldable partition
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Patent number 5,411,072
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Issue date May 2, 1995
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Panelfold, Inc.
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Hans Starck
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Flat folding partition
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Patent number 4,867,221
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Issue date Sep 19, 1989
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Panelfold, Inc.
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Guy E. Dixon
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Portable wall system
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Patent number 4,103,463
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Issue date Aug 1, 1978
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Panelfold Doors, Inc.
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Guy E. Dixon
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Extruded plastic folding door
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Patent number 3,972,365
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Issue date Aug 3, 1976
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Panelfold Doors, Inc. (Entire)
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Guy E. Dixon
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS