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Safety door entrance
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Patent number 4,290,233
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Issue date Sep 22, 1981
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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
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Window replacement system
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Patent number 4,250,673
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Issue date Feb 17, 1981
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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
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Solar energy concentrator
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Patent number 4,243,018
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Issue date Jan 6, 1981
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Kawneer Company, Inc.
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S. Eugene Hubbard
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F24 - HEATING RANGES VENTILATING
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Panic device actuator
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Patent number 4,225,163
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Issue date Sep 30, 1980
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Kawneer Company, Inc.
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S. Eugene Hubbard
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Double glazed wall structure
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Patent number 4,120,127
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Issue date Oct 17, 1978
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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
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Window safety system
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Patent number 4,080,758
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Issue date Mar 28, 1978
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Kawneer Company, Inc.
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S. Eugene Hubbard
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Sloped curtain wall structure
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Patent number 4,070,806
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Issue date Jan 31, 1978
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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
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Solar energy collector panel
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Patent number 4,067,317
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Issue date Jan 10, 1978
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Kawneer Company, Inc.
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S. Eugene Hubbard
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F24 - HEATING RANGES VENTILATING
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Mechanical accumulator
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Patent number 4,046,167
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Issue date Sep 6, 1977
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Kawneer Company, Inc.
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Joseph Papp
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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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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Automatic astragal
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Patent number 4,009,537
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Issue date Mar 1, 1977
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Kawneer Company, Inc.
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S. Eugene Hubbard
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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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