CN207750059U - 一种沉砂封隔器 - Google Patents
一种沉砂封隔器 Download PDFInfo
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- CN207750059U CN207750059U CN201820030172.7U CN201820030172U CN207750059U CN 207750059 U CN207750059 U CN 207750059U CN 201820030172 U CN201820030172 U CN 201820030172U CN 207750059 U CN207750059 U CN 207750059U
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CN201820030172.7U CN207750059U (zh) | 2018-01-09 | 2018-01-09 | 一种沉砂封隔器 |
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CN201820030172.7U CN207750059U (zh) | 2018-01-09 | 2018-01-09 | 一种沉砂封隔器 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107989570A (zh) * | 2018-01-09 | 2018-05-04 | 高云东 | 一种沉砂封隔器 |
CN110847857A (zh) * | 2019-12-06 | 2020-02-28 | 中国石油集团渤海钻探工程有限公司 | 一种可限位防沉砂堵塞器 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107989570A (zh) * | 2018-01-09 | 2018-05-04 | 高云东 | 一种沉砂封隔器 |
CN107989570B (zh) * | 2018-01-09 | 2024-04-12 | 东营市昌瑞石油机械配件有限责任公司 | 一种沉砂封隔器 |
CN110847857A (zh) * | 2019-12-06 | 2020-02-28 | 中国石油集团渤海钻探工程有限公司 | 一种可限位防沉砂堵塞器 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20181029 Address after: 257231 No. 26 West Road, Gudao Town, Hekou District, Dongying, Shandong Patentee after: DONGYING CHANGRUI PETROLEUM MACHINERY FITTINGS CO.,LTD. Address before: 257231 No. 26 West Road, Gudao Town, Hekou District, Dongying, Shandong Co-patentee before: Chen Dazhong Patentee before: Gao Yundong |
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TR01 | Transfer of patent right | ||
CB03 | Change of inventor or designer information |
Inventor after: Gao Yundong Inventor before: Gao Yundong Inventor before: Chen Dazhong |
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CB03 | Change of inventor or designer information |