Showing 1 - 20 results of 27 for search '"YAN XIANYUN"', query time: 1.01s Refine Results  

Door closer

by YAN XIANYUN
Year of Publication 26.06.2020
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Patent

Ecological door

by YAN XIANYUN
Year of Publication 22.10.2019
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Patent

Entity wall

by YAN XIANYUN
Year of Publication 08.01.2019
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Patent