CN205990900U - 射孔用密封自动进液阀 - Google Patents
射孔用密封自动进液阀 Download PDFInfo
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- CN205990900U CN205990900U CN201621002159.8U CN201621002159U CN205990900U CN 205990900 U CN205990900 U CN 205990900U CN 201621002159 U CN201621002159 U CN 201621002159U CN 205990900 U CN205990900 U CN 205990900U
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Effective date of registration: 20190731 Address after: 100120 Liupu Kang, Xicheng District, Beijing Co-patentee after: Chuanqing Drilling Engineering Co., Ltd. of China National Petroleum Corporation Patentee after: China Petroleum and Natural Gas Group Co., Ltd. Co-patentee after: China National Petroleum Group Logging Co., Ltd. Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology Patentee before: Chuanqing Drilling Engineering Co., Ltd. of China National Petroleum Corporation |
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