CN216406721U - 一种新型可快速冷却的石油勘探钻机 - Google Patents
一种新型可快速冷却的石油勘探钻机 Download PDFInfo
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CN114941792A (zh) * | 2022-05-17 | 2022-08-26 | 哈尔滨商业大学 | 一种用于辅助经济管理领域的电脑显示器拓展支架 |
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Cited By (2)
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CN114941792A (zh) * | 2022-05-17 | 2022-08-26 | 哈尔滨商业大学 | 一种用于辅助经济管理领域的电脑显示器拓展支架 |
CN114941792B (zh) * | 2022-05-17 | 2024-03-22 | 哈尔滨商业大学 | 一种用于辅助经济管理领域的电脑显示器拓展支架 |
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Effective date of registration: 20221102 Address after: 266000 Room 1401, Building 1, No. 443, Changjiang East Road, Qingdao Development Zone, Shandong Province Patentee after: Zhonghan Environmental Engineering Co.,Ltd. Address before: 518100 room 401a, 4th floor, Maoye commercial building, 245 Busha Road, Buji street, Longgang District, Shenzhen, Guangdong Patentee before: Yu Hongyu |
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Effective date of registration: 20221216 Address after: No. 639, Beiguan Street, Muping District, Yantai, Shandong 264100 Patentee after: PetroChina (Shandong) Energy Development Co.,Ltd. Address before: 266000 Room 1401, Building 1, No. 443, Changjiang East Road, Qingdao Development Zone, Shandong Province Patentee before: Zhonghan Environmental Engineering Co.,Ltd. |