CN205532341U - 一种高强度防腐碳纤维抽油杆 - Google Patents
一种高强度防腐碳纤维抽油杆 Download PDFInfo
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CN110566134A (zh) * | 2019-09-06 | 2019-12-13 | 山东大学 | 一种纤维复合材料芯绞合金属丝抽油杆及制备方法和应用 |
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CN110566134A (zh) * | 2019-09-06 | 2019-12-13 | 山东大学 | 一种纤维复合材料芯绞合金属丝抽油杆及制备方法和应用 |
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Effective date of registration: 20170510 Address after: Heilongjiang province Daqing City Honggang District 163000 Qing Nan Industrial Park Patentee after: Daqing Xin Feng Petroleum Technology Co., Ltd. Address before: 163000 Heilongjiang city of Daqing Province Light Industry Longfeng District Metro Patentee before: Daqing Hua Yu petroleum machinery Manufacturing Co., Ltd |
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TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20191216 Address after: Room 510, No. 1 Kaiyuan Street, Daqing Economic and Technological Development Zone, Jeanhu Road District, Heilongjiang Province Patentee after: Sine Technology Co., Ltd. Address before: Heilongjiang province Daqing City Honggang District 163000 Qing Nan Industrial Park Patentee before: Daqing Xin Feng Petroleum Technology Co., Ltd. |