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Hold open arm assembly
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Patent number 6,347,818
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Issue date Feb 19, 2002
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The Bilco Company
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Robert J. Lyons
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Roofing mechanism
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Patent number 5,960,596
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Issue date Oct 5, 1999
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The Bilco Company
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Robert Lyons
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E04 - BUILDING
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Portable safety post
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Patent number 4,729,453
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Issue date Mar 8, 1988
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The Bilco Company
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Robert J. Lyons
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Extendable railing
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Patent number 4,688,768
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Issue date Aug 25, 1987
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The Bilco Company
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Robert J. Lyons
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E04 - BUILDING
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Stairway stringers
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Patent number 4,135,508
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Issue date Jan 23, 1979
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Robert J. Lyons
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E04 - BUILDING
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