CN210461019U - 一种基于死点位置开关测量抽油机冲次的装置 - Google Patents
一种基于死点位置开关测量抽油机冲次的装置 Download PDFInfo
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CN114731964A (zh) * | 2022-03-29 | 2022-07-12 | 阿里云计算有限公司 | 养殖场动物监管系统及养殖场动物的定位方法 |
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Effective date of registration: 20210331 Address after: 101-11, 4th floor, building 5, yard 9, Dijin Road, Haidian District, Beijing Patentee after: Beijing ankong Automation Co.,Ltd. Address before: 100095 building 6, yard 9, Dijin Road, Haidian District, Beijing Patentee before: BEIJING ECHO TECHNOLOGIES Co.,Ltd. |
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Effective date of registration: 20220921 Address after: Room 101-10, 4th Floor, Building 5, Yard 9, Dijin Road, Haidian District, Beijing 100089 Patentee after: BEIJING ETROL OIL AND GAS TECHNOLOGY Co.,Ltd. Address before: 101-11, 4th floor, building 5, yard 9, Dijin Road, Haidian District, Beijing Patentee before: Beijing ankong Automation Co.,Ltd. |
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