CN206952917U - 一种钻杆内孔管线穿引工具 - Google Patents
一种钻杆内孔管线穿引工具 Download PDFInfo
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- CN206952917U CN206952917U CN201720352472.2U CN201720352472U CN206952917U CN 206952917 U CN206952917 U CN 206952917U CN 201720352472 U CN201720352472 U CN 201720352472U CN 206952917 U CN206952917 U CN 206952917U
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- drilling rod
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CN201720352472.2U CN206952917U (zh) | 2017-04-06 | 2017-04-06 | 一种钻杆内孔管线穿引工具 |
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Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: Drilling Engineering Technology Research Institute, China National Petroleum Corp. Patentee after: China National Petroleum Corporation Co-patentee after: Beijing Petroleum Machinery Co., Ltd. Address before: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: Drilling Engineering Technology Research Institute, China National Petroleum Corp. Patentee before: China National Petroleum Corporation Co-patentee before: Beijing Petroleum Machinery plant |
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CP01 | Change in the name or title of a patent holder |