CN210977352U - 一种自动换杆钻机 - Google Patents
一种自动换杆钻机 Download PDFInfo
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Cited By (1)
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CN111021967A (zh) * | 2019-11-25 | 2020-04-17 | 北京建研机械科技有限公司 | 一种自动拆装钻杆的换杆钻机及使用方法 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111021967A (zh) * | 2019-11-25 | 2020-04-17 | 北京建研机械科技有限公司 | 一种自动拆装钻杆的换杆钻机及使用方法 |
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Address after: 100007 Beijing Dongcheng District city Andingmen Fangjia Hutong No. 21 Patentee after: Jianyan machinery inspection and testing (Beijing) Co.,Ltd. Patentee after: BEIJING CONSTRUCTION MECHANIZATION RESEARCH INSTITUTE CO.,LTD. Address before: 100007 Beijing Dongcheng District city Andingmen Fangjia Hutong No. 21 Patentee before: BEIJING JAINE MACHINERY TECHNOLOGY Ltd. Patentee before: BEIJING CONSTRUCTION MECHANIZATION RESEARCH INSTITUTE CO.,LTD. |
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Effective date of registration: 20210122 Address after: 21 Fangjia Hutong, Dongcheng District, Beijing, 100010 Patentee after: BEIJING CONSTRUCTION MECHANIZATION RESEARCH INSTITUTE CO.,LTD. Patentee after: CABR CONSTRUCTION MACHINERY TECHNOLOGY Co.,Ltd. Address before: 100007 Beijing Dongcheng District city Andingmen Fangjia Hutong No. 21 Patentee before: Jianyan machinery inspection and testing (Beijing) Co.,Ltd. Patentee before: BEIJING CONSTRUCTION MECHANIZATION RESEARCH INSTITUTE CO.,LTD. |