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Door fastener
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Patent number 5,561,995
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Issue date Oct 8, 1996
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Malcoe Precision Fabrications Ltd.
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Stuart F. Copping
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Quick release structural fastener
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Patent number 5,076,748
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Issue date Dec 31, 1991
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Camloc (U.K.) Limited
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Richard Waterfield
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Locking device
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Patent number 5,044,105
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Issue date Sep 3, 1991
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Camloc (U.K.) Limited
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Adrian Q. Lindley
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Self-locking fastener apparatus
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Patent number 4,890,964
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Issue date Jan 2, 1990
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Rexnord Inc.
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Adrian Q. Lindley
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...