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Improved roller shutter assembly
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Patent number 5,351,743
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Issue date Oct 4, 1994
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Rotalac Plastics Limited
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John Jackson
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Bi-parting shutter system
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Patent number 5,178,199
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Issue date Jan 12, 1993
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Rotalac Plastics Limited
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John Jackson
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Extruded section
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Patent number D274267
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Issue date Jun 12, 1984
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Rotalac Plastics Limited
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Michael J. Cushing
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D25 - Building units and construction elements