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Safety door lock

by GAO XINLU
Year of Publication 25.09.2013
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Patent

Door lock

by GAO XINLU
Year of Publication 25.09.2013
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Patent

Toggle switch

by GAO XINLU
Year of Publication 21.08.2013
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Patent

Horizontal blade lock

by GAO XINLU
Year of Publication 30.01.2013
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Patent

Door lock structure

by GAO XINLU
Year of Publication 04.07.2012
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Patent