CN206861099U - 一种密封性能好的石油管道接头 - Google Patents
一种密封性能好的石油管道接头 Download PDFInfo
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Cited By (1)
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CN107504296A (zh) * | 2017-09-29 | 2017-12-22 | 绵阳头坝科技有限公司 | 一种密封性能好的石油管道接头 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN107504296A (zh) * | 2017-09-29 | 2017-12-22 | 绵阳头坝科技有限公司 | 一种密封性能好的石油管道接头 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
CB03 | Change of inventor or designer information | ||
CB03 | Change of inventor or designer information |
Inventor after: Xu Yefeng Inventor after: Qin Rongfang Inventor before: Li Chaojun |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20180619 Address after: 210000 times Road, Liuhe Economic Development Zone, Nanjing, Jiangsu Patentee after: Jiangsu wolf pipe manufacturing Co., Ltd. Address before: 610000 7, 1 floor, 6 Cambridge Township, Gaoqiao village, Xu Jia town, Dujiangyan, Chengdu, Sichuan Patentee before: Chengdu gachie technology limited liability company |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20180704 |