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Padlock with a status indicator
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Patent number 7,216,517
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Issue date May 15, 2007
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Sinox Co., Ltd.
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Renny Tse-Haw Ling
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1527936
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Patent number 1,527,936
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Issue date Feb 24, 1925
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1522851
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Patent number 1,522,851
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Issue date Jan 13, 1925
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1367104
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Patent number 1,367,104
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Issue date Feb 1, 1921
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1209894
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Patent number 1,209,894
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Issue date Dec 26, 1916
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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984952
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Patent number 984,952
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Issue date Feb 21, 1911
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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723059
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Patent number 723,059
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Issue date Mar 17, 1903
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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643956
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Patent number 643,956
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Issue date Feb 20, 1900
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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555337
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Patent number 555,337
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Issue date Feb 25, 1896
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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452894
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Patent number 452,894
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Issue date May 26, 1891
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B60 - VEHICLES IN GENERAL
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452433
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Patent number 452,433
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Issue date May 19, 1891
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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451110
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Patent number 451,110
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Issue date Apr 28, 1891
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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291646
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Patent number 291,646
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Issue date Jan 8, 1884
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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194848
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Patent number 194,848
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Issue date Sep 4, 1877
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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194849
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Patent number 194,849
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Issue date Sep 4, 1877
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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185758
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Patent number 185,758
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Issue date Dec 26, 1876
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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176759
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Patent number 176,759
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Issue date May 2, 1876
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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153058
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Patent number 153,058
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Issue date Jul 14, 1874
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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145853
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Patent number 145,853
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Issue date Dec 23, 1873
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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9452
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Patent number 9,452
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Issue date Dec 7, 1852
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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8318
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Patent number 8,318
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Issue date Aug 26, 1851
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES