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Time programmable unlocking lock
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Patent number 7,464,570
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Issue date Dec 16, 2008
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Co-Young International Co., Ltd.
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Chih-Jung Chen
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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3236706
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Patent number 3,236,706
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Issue date Feb 22, 1966
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2030219
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Patent number 2,030,219
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Issue date Feb 11, 1936
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1902195
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Patent number 1,902,195
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Issue date Mar 21, 1933
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1813441
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Patent number 1,813,441
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Issue date Jul 7, 1931
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1384397
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Patent number 1,384,397
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Issue date Jul 12, 1921
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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1164378
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Patent number 1,164,378
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Issue date Dec 14, 1915
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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991669
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Patent number 991,669
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Issue date May 9, 1911
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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991629
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Patent number 991,629
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Issue date May 9, 1911
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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437682
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Patent number 437,682
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Issue date Oct 7, 1890
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES