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Building curtain wall
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Patent number 6,158,182
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Issue date Dec 12, 2000
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Butler Manufacturing Co.
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Lawrence F. Biebuyck
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E04 - BUILDING
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Door assembly
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Patent number 5,930,955
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Issue date Aug 3, 1999
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Butler Manufacturing Company
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Lawrence F. Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Threshold system
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Patent number 5,469,665
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Issue date Nov 28, 1995
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Butler Manufacturing Corporation
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Lawrence Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Entrance system
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Patent number 5,319,882
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Issue date Jun 14, 1994
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Butler Manufacturing Corporation
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Lawrence Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Wall panel system
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Patent number 5,058,344
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Issue date Oct 22, 1991
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Butler Manufacturing Corporation
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Lawrence Biebuyck
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E04 - BUILDING
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Rolled metal building system
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Patent number 5,036,637
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Issue date Aug 6, 1991
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Butler Manufacturing Corporation
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Lawrence Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Flexible joint building system
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Patent number 4,773,193
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Issue date Sep 27, 1988
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Butler Manufacturing Company
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Lawrence Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Curtain wall valve system
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Patent number 4,644,717
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Issue date Feb 24, 1987
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Butler Manufacturing Co.
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Lawrence F. Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Wall construction
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Patent number 4,030,260
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Issue date Jun 21, 1977
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Kawneer Company, Inc.
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Ronald D. Sukolics
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E04 - BUILDING
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Wall construction
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Patent number 4,010,671
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Issue date Mar 8, 1977
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Kawneer Company, Inc.
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S. Eugene Hubbard
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Wall structure and elements therefor
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Patent number 4,008,552
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Issue date Feb 22, 1977
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Howmet Corporation
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Lawrence F. Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Narrow frame wall structure
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Patent number 4,006,573
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Issue date Feb 8, 1977
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Howmet Corporation
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Lawrence F. Biebuyck
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Wall construction
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Patent number 3,961,452
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Issue date Jun 8, 1976
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Kawneer Company, Inc.
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S. Eugene Hubbard
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS