CN211950342U - 一种具有大排渣结构的水平定向钻扩孔钻头 - Google Patents
一种具有大排渣结构的水平定向钻扩孔钻头 Download PDFInfo
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CN114086892A (zh) * | 2021-10-14 | 2022-02-25 | 深圳市工勘岩土集团有限公司 | 气举反循环钻机的钻头结构 |
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CN114086892A (zh) * | 2021-10-14 | 2022-02-25 | 深圳市工勘岩土集团有限公司 | 气举反循环钻机的钻头结构 |
CN114086892B (zh) * | 2021-10-14 | 2024-05-28 | 深圳市工勘岩土集团有限公司 | 气举反循环钻机的钻头结构 |
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Inventor after: Chen Qi Inventor after: Wan Ce Inventor after: Tan Qikui Inventor after: Pu Chengke Inventor before: Chen Qi Inventor before: Wan Ce Inventor before: Tan Qikui Inventor before: Pu Chengke |
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CP01 | Change in the name or title of a patent holder | ||
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Address after: No. 369, Xingchuan Road, Jinniu District, Chengdu, Sichuan 610000 Patentee after: Sichuan Chengdu Exploration Machinery Co.,Ltd. Address before: No. 369, Xingchuan Road, Jinniu District, Chengdu, Sichuan 610000 Patentee before: CHENGDU PROSPECTING MACHINERY FACTORY |