CN205135459U - 一种连续抽油杆紧扣防护装置 - Google Patents
一种连续抽油杆紧扣防护装置 Download PDFInfo
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CN107023266A (zh) * | 2017-06-08 | 2017-08-08 | 广汉川亿石油科技有限公司 | 一种双头防落物卡钻的钻井稳固器 |
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Cited By (1)
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CN107023266A (zh) * | 2017-06-08 | 2017-08-08 | 广汉川亿石油科技有限公司 | 一种双头防落物卡钻的钻井稳固器 |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address |
Address after: 257000 Dongying City, Shandong Province, Yunmenshan Road 1123 Dongying District Petroleum Science and Technology Industrial Park Phase I No.6 Patentee after: Shandong Ryo Intelligent Equipment Co.,Ltd. Address before: 257000 west side of gongnongjianshe Road, Jingwu village, Dongying District, Dongying City, Shandong Province Patentee before: SHANDONG RUIAO INTELLIGENT EQUIPMENT Co.,Ltd. Address after: 257000 west side of gongnongjianshe Road, Jingwu village, Dongying District, Dongying City, Shandong Province Patentee after: SHANDONG RUIAO INTELLIGENT EQUIPMENT Co.,Ltd. Address before: 257000 Shandong Province, Dongying city Dongying District Zhao Dong Trade City No. 30 Patentee before: DONGYING REAL |
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CP03 | Change of name, title or address | ||
TR01 | Transfer of patent right |
Effective date of registration: 20201009 Address after: Room 411, Hualing international building, 722 Beiyi Road, Dongying District, Dongying City, Shandong Province Patentee after: Shandong Kunjiu Petroleum Technology Co.,Ltd. Address before: 257000 Dongying City, Shandong Province, Yunmenshan Road 1123 Dongying District Petroleum Science and Technology Industrial Park Phase I No.6 Patentee before: Shandong Ryo Intelligent Equipment Co.,Ltd. |
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TR01 | Transfer of patent right |