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发明人： 周宗佑;王庭庆;文利辉 分类号： b29c49/42 (2006.01)i;b23k26/361 (2014.01)i;b23k26/402 (2014.01)i;b23k26/08 (2014.01)i;b23k37/04 (2006.01)i;b24b9/20. 发明专利 发明专利申请 事务数据 授权公告号： cn111345700b 授权公告日： 2025.05.09 申请号： 2019112995225 申请日： 2019.12.17 同一申请的已公布的文献号： cn111345700a 申请. 发明专利 发明专利申请 事务数据 申请公布号： cn114960471a 申请公布日： 2022.08.30 申请号： 2022104422717 申请日： 2022.04.25 申请人： 王博 地址： 300110天津市南.
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