CN203452678U - 一种纤维增强复合材料防偏磨连续抽油杆的组合卡盘 - Google Patents
一种纤维增强复合材料防偏磨连续抽油杆的组合卡盘 Download PDFInfo
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- CN203452678U CN203452678U CN201320477180.3U CN201320477180U CN203452678U CN 203452678 U CN203452678 U CN 203452678U CN 201320477180 U CN201320477180 U CN 201320477180U CN 203452678 U CN203452678 U CN 203452678U
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320477180.3U CN203452678U (zh) | 2013-08-07 | 2013-08-07 | 一种纤维增强复合材料防偏磨连续抽油杆的组合卡盘 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320477180.3U CN203452678U (zh) | 2013-08-07 | 2013-08-07 | 一种纤维增强复合材料防偏磨连续抽油杆的组合卡盘 |
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| CN203452678U true CN203452678U (zh) | 2014-02-26 |
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| CN201320477180.3U Expired - Lifetime CN203452678U (zh) | 2013-08-07 | 2013-08-07 | 一种纤维增强复合材料防偏磨连续抽油杆的组合卡盘 |
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| CN (1) | CN203452678U (zh) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Song Guangqing Inventor after: Wu Xiaofa Inventor after: Gao Chao Inventor after: Li Qiang Inventor after: Wu Lei Inventor after: Song Lili Inventor after: Wang Libin Inventor before: Song Guangqing Inventor before: Wu Xiaofa Inventor before: Gao Chao Inventor before: Li Qiang Inventor before: Wu Lei Inventor before: Song Lili Inventor before: Wang Libin |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 257091, No. 221, South Road, an industrial park, Dongying Economic Development Zone, Shandong Patentee after: Shengli new big new materials Co.,Ltd. Address before: 257091, No. 221, South Road, an industrial park, Dongying Economic Development Zone, Shandong Patentee before: SHENGLI OIL FIELD XINDA PIPE INDUSTRY TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |