CN203939469U - 一种井下操作系统 - Google Patents
一种井下操作系统 Download PDFInfo
- Publication number
- CN203939469U CN203939469U CN201420300225.4U CN201420300225U CN203939469U CN 203939469 U CN203939469 U CN 203939469U CN 201420300225 U CN201420300225 U CN 201420300225U CN 203939469 U CN203939469 U CN 203939469U
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- cavity
- piston body
- bent axle
- pneumatic
- downhole operations
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CN201420300225.4U CN203939469U (zh) | 2014-06-08 | 2014-06-08 | 一种井下操作系统 |
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CN201420300225.4U CN203939469U (zh) | 2014-06-08 | 2014-06-08 | 一种井下操作系统 |
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CN203939469U true CN203939469U (zh) | 2014-11-12 |
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CN201420300225.4U Expired - Fee Related CN203939469U (zh) | 2014-06-08 | 2014-06-08 | 一种井下操作系统 |
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CN (1) | CN203939469U (zh) |
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2014
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C53 | Correction of patent for invention or patent application | ||
C56 | Change in the name or address of the patentee |
Owner name: YANG LIJUN Free format text: FORMER NAME: JIANG ZHUOYA |
|
CB03 | Change of inventor or designer information |
Inventor after: Yang Lijun Inventor after: Xu Xuhan Inventor after: Jiang Zhuoya Inventor after: You Zinuo Inventor before: Jiang Zhuoya Inventor before: Xu Xuhan Inventor before: Yang Lijun Inventor before: You Zinuo |
|
COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JIANG ZHUOYA XU XUHAN YANG LI YOU ZINUO TO: YANG LIJUN XU XUHAN JIANG ZHUOYA YOU ZINUO |
|
CP03 | Change of name, title or address |
Address after: Zhuzhou City, Hunan Province, the 412000 District 61 Building No. 5 Lusong Road No. 405 Patentee after: Yang Lijun Patentee after: Xu Xuhan Patentee after: Jiang Zhuoya Patentee after: You Zinuo Address before: Zhuzhou City, Hunan province 412000 Lusong District hejiaao 20 building No. 608 Patentee before: Jiang Zhuoya Patentee before: Xu Xuhan Patentee before: Yang Lijun Patentee before: You Zinuo |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20150608 |
|
EXPY | Termination of patent right or utility model |