CN208669237U - 一种空气钻井用降尘装置 - Google Patents
一种空气钻井用降尘装置 Download PDFInfo
- Publication number
- CN208669237U CN208669237U CN201821079509.XU CN201821079509U CN208669237U CN 208669237 U CN208669237 U CN 208669237U CN 201821079509 U CN201821079509 U CN 201821079509U CN 208669237 U CN208669237 U CN 208669237U
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- Prior art keywords
- drilling device
- dust
- air drilling
- reducing dust
- connecting tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201821079509.XU CN208669237U (zh) | 2018-07-09 | 2018-07-09 | 一种空气钻井用降尘装置 |
Applications Claiming Priority (1)
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CN201821079509.XU CN208669237U (zh) | 2018-07-09 | 2018-07-09 | 一种空气钻井用降尘装置 |
Publications (1)
Publication Number | Publication Date |
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CN208669237U true CN208669237U (zh) | 2019-03-29 |
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Family Applications (1)
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CN201821079509.XU Expired - Fee Related CN208669237U (zh) | 2018-07-09 | 2018-07-09 | 一种空气钻井用降尘装置 |
Country Status (1)
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CN (1) | CN208669237U (zh) |
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2018
- 2018-07-09 CN CN201821079509.XU patent/CN208669237U/zh not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210609 Address after: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: No.83, 2nd Street, Binhai New Area Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
TR01 | Transfer of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190329 |
|
CF01 | Termination of patent right due to non-payment of annual fee |