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Tamper resistant lock
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Patent number 8,250,887
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Issue date Aug 28, 2012
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J.J. MacKay Canada Limited
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George Allan MacKay
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Door lock and latch assembly
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Patent number 6,655,178
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Issue date Dec 2, 2003
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David A. Lingbeck
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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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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Double hook-bolt unit lock
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Patent number 5,009,089
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Issue date Apr 23, 1991
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Emily M. Y. Lin
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Door lock
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Patent number 4,639,021
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Issue date Jan 27, 1987
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Jimmie L. Hope
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Lock arrangement
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Patent number 4,513,593
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Issue date Apr 30, 1985
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Norman H. Wilson
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Sliding door lock
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Patent number 4,239,268
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Issue date Dec 16, 1980
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Harlan H. Rider
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3745796
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Patent number 3,745,796
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Issue date Jul 17, 1973
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3527069
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Patent number 3,527,069
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Issue date Sep 8, 1970
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3255618
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Patent number 3,255,618
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Issue date Jun 14, 1966
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3187526
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Patent number 3,187,526
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Issue date Jun 8, 1965
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2557670
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Patent number 2,557,670
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Issue date Jun 19, 1951
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2535947
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Patent number 2,535,947
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Issue date Dec 26, 1950
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2373783
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Patent number 2,373,783
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Issue date Apr 17, 1945
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2189019
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Patent number 2,189,019
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Issue date Feb 6, 1940
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2172169
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Patent number 2,172,169
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Issue date Sep 5, 1939
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2124758
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Patent number 2,124,758
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Issue date Jul 26, 1938
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2095590
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Patent number 2,095,590
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Issue date Oct 12, 1937
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2069883
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Patent number 2,069,883
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Issue date Feb 9, 1937
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1997528
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Patent number 1,997,528
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Issue date Apr 9, 1935
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1988080
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Patent number 1,988,080
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Issue date Jan 15, 1935
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1983856
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Patent number 1,983,856
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Issue date Dec 11, 1934
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1966171
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Patent number 1,966,171
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Issue date Jul 10, 1934
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1922062
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Patent number 1,922,062
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Issue date Aug 15, 1933
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1920848
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Patent number 1,920,848
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Issue date Aug 1, 1933
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1893263
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Patent number 1,893,263
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Issue date Jan 3, 1933
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1869596
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Patent number 1,869,596
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Issue date Aug 2, 1932
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1810760
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Patent number 1,810,760
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Issue date Jun 16, 1931
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1730011
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Patent number 1,730,011
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Issue date Oct 1, 1929
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES