CN210178293U - 钻杆滤清器 - Google Patents
钻杆滤清器 Download PDFInfo
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- CN210178293U CN210178293U CN201920808991.4U CN201920808991U CN210178293U CN 210178293 U CN210178293 U CN 210178293U CN 201920808991 U CN201920808991 U CN 201920808991U CN 210178293 U CN210178293 U CN 210178293U
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- filter
- drill rod
- cylinder
- protection cylinder
- protection
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Application Number | Priority Date | Filing Date | Title |
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CN201920808991.4U CN210178293U (zh) | 2019-05-29 | 2019-05-29 | 钻杆滤清器 |
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CN201920808991.4U CN210178293U (zh) | 2019-05-29 | 2019-05-29 | 钻杆滤清器 |
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CN210178293U true CN210178293U (zh) | 2020-03-24 |
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CN201920808991.4U Expired - Fee Related CN210178293U (zh) | 2019-05-29 | 2019-05-29 | 钻杆滤清器 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112081545A (zh) * | 2020-09-26 | 2020-12-15 | 中国石油天然气集团有限公司 | 一种钻杆滤清器 |
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2019
- 2019-05-29 CN CN201920808991.4U patent/CN210178293U/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112081545A (zh) * | 2020-09-26 | 2020-12-15 | 中国石油天然气集团有限公司 | 一种钻杆滤清器 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20201222 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: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. 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: 20200324 |
|
CF01 | Termination of patent right due to non-payment of annual fee |