CN210460503U - 减阻振击器双压腔螺杆钻具 - Google Patents
减阻振击器双压腔螺杆钻具 Download PDFInfo
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CN110374509A (zh) * | 2019-08-26 | 2019-10-25 | 山东陆海石油技术股份有限公司 | 减阻振击器双压腔螺杆钻具 |
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CN110374509A (zh) * | 2019-08-26 | 2019-10-25 | 山东陆海石油技术股份有限公司 | 减阻振击器双压腔螺杆钻具 |
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Effective date of registration: 20220224 Address after: 253500 north of the middle section of Beichen Road, economic development zone, Lingcheng District, Dezhou City, Shandong Province Patentee after: SHANDONG LUHAI NEW ENERGY TECHNOLOGY CO.,LTD. Address before: 253500 Beichen Road, Lingcheng Economic Development Zone, De Zhou City, Shandong Province Patentee before: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20220630 Address after: 253500 No. 6, Beichen Road, economic development zone, Lingcheng District, De Zhou City, Shandong Province Patentee after: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO.,LTD. Address before: 253500 north of the middle section of Beichen Road, economic development zone, Lingcheng District, Dezhou City, Shandong Province Patentee before: SHANDONG LUHAI NEW ENERGY TECHNOLOGY CO.,LTD. |
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