CN203476214U - 随钻下抽排管钻探用钻头 - Google Patents
随钻下抽排管钻探用钻头 Download PDFInfo
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- CN203476214U CN203476214U CN201320542265.5U CN201320542265U CN203476214U CN 203476214 U CN203476214 U CN 203476214U CN 201320542265 U CN201320542265 U CN 201320542265U CN 203476214 U CN203476214 U CN 203476214U
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- drill bit
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CN201320542265.5U CN203476214U (zh) | 2013-09-02 | 2013-09-02 | 随钻下抽排管钻探用钻头 |
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CN201320542265.5U CN203476214U (zh) | 2013-09-02 | 2013-09-02 | 随钻下抽排管钻探用钻头 |
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CN203476214U true CN203476214U (zh) | 2014-03-12 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103912221A (zh) * | 2014-04-22 | 2014-07-09 | 铁道第三勘察设计院集团有限公司 | 一种护管钻头及其在岩土定深静力触探中的应用 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103912221A (zh) * | 2014-04-22 | 2014-07-09 | 铁道第三勘察设计院集团有限公司 | 一种护管钻头及其在岩土定深静力触探中的应用 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU XIANGLONG DRILLING EQUIPMENT TECHNOLOGY C Free format text: FORMER NAME: HANGZHOU XIANGLONG DRILLING EQUIPMENT CO., LTD. |
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CP01 | Change in the name or title of a patent holder |
Address after: Worker Road, the Fuchun River Town, Tonglu County, Hangzhou, Zhejiang Patentee after: HANGZHOU XIANGLONG DRILLING EQUIPMENT CO.,LTD. Patentee after: Chen Aihe Patentee after: Si Chunfeng Patentee after: Sun Yufeng Patentee after: Liu Yanjun Patentee after: Wang Hongwei Patentee after: Liu Xianzhou Address before: Worker Road, the Fuchun River Town, Tonglu County, Hangzhou, Zhejiang Patentee before: HANGZHOU XIANGLONG DRILLING EQUIPMENT Co.,Ltd. Patentee before: Chen Aihe Patentee before: Si Chunfeng Patentee before: Sun Yufeng Patentee before: Liu Yanjun Patentee before: Wang Hongwei Patentee before: Liu Xianzhou |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20210902 |
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CF01 | Termination of patent right due to non-payment of annual fee |