CN216375952U - 一种液压自起式钻井用下灰罐 - Google Patents
一种液压自起式钻井用下灰罐 Download PDFInfo
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GR01 | Patent grant | ||
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CB03 | Change of inventor or designer information | ||
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Inventor after: Ding Feng Inventor after: Chen Shuqing Inventor after: Sun Lidong Inventor after: Zhang Jun Inventor after: Wei Xiaojing Inventor after: Li Xinyue Inventor after: Li Lianzhong Inventor after: Li Chong Inventor after: Hou Chuansen Inventor after: Wang Shiqing Inventor after: Chen Guoping Inventor after: Zhou Jianxin Inventor after: Xiong Guichun Inventor before: Ding Feng Inventor before: Chen Shuqing Inventor before: Sun Lidong Inventor before: Zhang Jun Inventor before: Wei Xiaojing Inventor before: Li Xinyue Inventor before: Li Lianzhong Inventor before: Li Chong Inventor before: Hou Chuansen Inventor before: Wang Shiqing Inventor before: Chen Guoping Inventor before: Zhou Jianxin Inventor before: Xiong Guichun |
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TR01 | Transfer of patent right | ||
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Effective date of registration: 20230404 Address after: 257000 No. 125 Ji'nan Road, Dongying District, Dongying, Shandong. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: SHENGLI OIL FIELD AOKAILONG PRODUCTS ENGINEERING Co.,Ltd. Address before: 257091 No.36, Liaohe Road, Dongying District, Dongying City, Shandong Province Patentee before: SHENGLI OIL FIELD AOKAILONG PRODUCTS ENGINEERING Co.,Ltd. |