CN211666628U - 一种便携式工程地质勘察钻机 - Google Patents
一种便携式工程地质勘察钻机 Download PDFInfo
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- CN211666628U CN211666628U CN201921125297.9U CN201921125297U CN211666628U CN 211666628 U CN211666628 U CN 211666628U CN 201921125297 U CN201921125297 U CN 201921125297U CN 211666628 U CN211666628 U CN 211666628U
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CN201921125297.9U CN211666628U (zh) | 2019-07-17 | 2019-07-17 | 一种便携式工程地质勘察钻机 |
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CN201921125297.9U CN211666628U (zh) | 2019-07-17 | 2019-07-17 | 一种便携式工程地质勘察钻机 |
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CN211666628U true CN211666628U (zh) | 2020-10-13 |
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CB03 | Change of inventor or designer information |
Inventor after: Qian Shengbing Inventor after: Pan Xuebiao Inventor after: Zhang Shiwei Inventor after: Qian Weidong Inventor after: Sun Guifei Inventor after: Ma Xiaoxiao Inventor before: Qian Shengbing Inventor before: Pan Xuebiao Inventor before: Zhang Shiwei Inventor before: Qian Weidong Inventor before: Sun Guifei Inventor before: Ma Xiaoxiao |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201013 Termination date: 20210717 |
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CF01 | Termination of patent right due to non-payment of annual fee |