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Closure
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Patent number 4,120,340
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Issue date Oct 17, 1978
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Cornell Iron Works, Inc.
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John A. Stascavage
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Door release mechanism
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Patent number 3,955,840
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Issue date May 11, 1976
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Cornell Iron Works, Inc.
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William W. Rawls
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES