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A LOCK

by MA, XUEWEN
Year of Publication 21.08.2015
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Patent

Lock

by MA XUEWEN
Year of Publication 17.06.2015
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Patent

Paint stirring device

by MA XUEWEN
Year of Publication 29.04.2015
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Patent

Lock cylinder of lock

by MA XUEWEN
Year of Publication 26.05.2020
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Patent