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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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Combination lock
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Patent number 7,007,520
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Issue date Mar 7, 2006
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Yu-Feng Lin
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3797282
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Patent number 3,797,282
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Issue date Mar 19, 1974
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1570952
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Patent number 1,570,952
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Issue date Jan 26, 1926
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES