CN203867554U - 一种耐高温井下自供电信号发生器 - Google Patents
一种耐高温井下自供电信号发生器 Download PDFInfo
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- CN203867554U CN203867554U CN201420268391.0U CN201420268391U CN203867554U CN 203867554 U CN203867554 U CN 203867554U CN 201420268391 U CN201420268391 U CN 201420268391U CN 203867554 U CN203867554 U CN 203867554U
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CN104390906A (zh) * | 2014-11-24 | 2015-03-04 | 中国水利水电科学研究院 | 钢绞线腐蚀试验的密封装置 |
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CN104390906A (zh) * | 2014-11-24 | 2015-03-04 | 中国水利水电科学研究院 | 钢绞线腐蚀试验的密封装置 |
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C14 | Grant of patent or utility model | ||
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CB03 | Change of inventor or designer information | ||
CB03 | Change of inventor or designer information |
Inventor after: Gao Zengxin Inventor before: Yuan Fang Inventor before: Gong Xianfeng Inventor before: Gao Zengxin |
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CP03 | Change of name, title or address | ||
CP03 | Change of name, title or address |
Address after: 100085 Beijing Road, building No. 8, building 3-2, No. 3, Haidian District Patentee after: Beijing Hengtai Huambo Petroleum Technology Limited by Share Ltd Patentee after: YANTAI HENGTAI OILFIELD TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 100000 Beijing Road, building No. 8, building 3-2, No. three, Haidian District Patentee before: Beijing Hengtai Wanbo Petroleum Technology Co., Ltd. Patentee before: YANTAI HENGTAI OILFIELD TECHNOLOGY DEVELOPMENT CO., LTD. |