CN210264742U - 一种双层注浆导管 - Google Patents
一种双层注浆导管 Download PDFInfo
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- CN210264742U CN210264742U CN201921130697.9U CN201921130697U CN210264742U CN 210264742 U CN210264742 U CN 210264742U CN 201921130697 U CN201921130697 U CN 201921130697U CN 210264742 U CN210264742 U CN 210264742U
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CN201921130697.9U CN210264742U (zh) | 2019-07-18 | 2019-07-18 | 一种双层注浆导管 |
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CB03 | Change of inventor or designer information |
Inventor after: Ren Dengjun Inventor after: Huo Chao Inventor after: Xie Xiaoyu Inventor after: Zhang Jinkui Inventor after: Sun Yayue Inventor after: Wang Qingzhen Inventor after: Zhang Yunqiang Inventor after: Huang Hefei Inventor after: Li Jinlong Inventor after: Xing Jiebo Inventor after: Liang Xidong Inventor before: Ren Dengjun Inventor before: Huo Chao Inventor before: Xie Xiaoyu Inventor before: Zhang Jinkui Inventor before: Sun Yayue Inventor before: Wang Qingzhen Inventor before: Zhang Yunqiang Inventor before: Huang Hefei Inventor before: Li Jinlong Inventor before: Criminal Jiebo Inventor before: Liang Xidong |
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CB03 | Change of inventor or designer information | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 Termination date: 20210718 |
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CF01 | Termination of patent right due to non-payment of annual fee |