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Prismatic lock and key security
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Patent number 9,274,508
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Issue date Mar 1, 2016
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Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
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William R. Duffy
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G05 - CONTROLLING REGULATING
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Prismatic lock and key security
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Patent number 8,462,322
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Issue date Jun 11, 2013
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International Business Machines Corporation
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William R. Duffy
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G05 - CONTROLLING REGULATING
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Locking sensor
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Patent number 8,177,179
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Issue date May 15, 2012
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EPCOS AG
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Oliver Bard
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G01 - MEASURING TESTING
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Lock device
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Patent number 7,650,769
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Issue date Jan 26, 2010
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Tsung-I Lo
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Internal combustion engine and an engine housing
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Patent number 7,475,663
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Issue date Jan 13, 2009
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International Engine Intellectual Property Company, LLC
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Caetano M. A. Calviti
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Musical door lock
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Patent number 5,564,294
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Issue date Oct 15, 1996
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Lai-Fa Chen
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3358572
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Patent number 3,358,572
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Issue date Dec 19, 1967
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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2610368
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Patent number 2,610,368
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Issue date Sep 16, 1952
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2509558
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Patent number 2,509,558
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Issue date May 30, 1950
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2497405
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Patent number 2,497,405
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Issue date Feb 14, 1950
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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2462268
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Patent number 2,462,268
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Issue date Feb 22, 1949
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G01 - MEASURING TESTING
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2327334
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Patent number 2,327,334
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Issue date Aug 17, 1943
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F41 - WEAPONS
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2070103
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Patent number 2,070,103
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Issue date Feb 9, 1937
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES