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Restoring structure of a lock
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Patent number 7,073,829
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Issue date Jul 11, 2006
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Tong Lung Metal Industry Co., Ltd.
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Ching-Chuan Kuo
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Lock
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Patent number 6,575,006
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Issue date Jun 10, 2003
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Tung Lung Metal Industry Co., Ltd.
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Lan-Kun Don
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Latch bolt operating device
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Patent number 5,722,273
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Issue date Mar 3, 1998
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Tong-Lung Metal Industry Co., Ltd.
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San-Yi Lin
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Reinforced cylindrical door lock set
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Patent number 5,385,374
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Issue date Jan 31, 1995
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Tong-Lung Metal Industry Co., Ltd.
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Yaw-Shin Fann
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES