Personnel and safety management system
LIU HONGDAN, NIU TINGJU, ZHENG GUOQIU, WEI XUCHANG, YU HUIQING, WANG HAI, LI YONGWANG
Year of Publication 06.04.2018
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Year of Publication 06.04.2018
Patent
Personnel and safety control system
LIU HONGDAN, NIU TINGJU, ZHENG GUOQIU, WEI XUCHANG, YU HUIQING, WANG HAI, LI YONGWANG
Year of Publication 27.06.2017
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Year of Publication 27.06.2017
Patent