CN201794539U - 井下工具的自清洁式排砂装置 - Google Patents
井下工具的自清洁式排砂装置 Download PDFInfo
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- CN201794539U CN201794539U CN201020518783XU CN201020518783U CN201794539U CN 201794539 U CN201794539 U CN 201794539U CN 201020518783X U CN201020518783X U CN 201020518783XU CN 201020518783 U CN201020518783 U CN 201020518783U CN 201794539 U CN201794539 U CN 201794539U
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CN201020518783XU CN201794539U (zh) | 2010-09-06 | 2010-09-06 | 井下工具的自清洁式排砂装置 |
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CN201020518783XU CN201794539U (zh) | 2010-09-06 | 2010-09-06 | 井下工具的自清洁式排砂装置 |
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CN201794539U true CN201794539U (zh) | 2011-04-13 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101936146A (zh) * | 2010-09-06 | 2011-01-05 | 中国海洋石油总公司 | 井下工具的自清洁式排砂装置 |
CN107414030A (zh) * | 2017-06-20 | 2017-12-01 | 珠海肯赛科有色金属有限公司 | 一种用于铸造制芯模具的自清洁排气塞 |
CN107956444A (zh) * | 2016-10-18 | 2018-04-24 | 中国石油化工股份有限公司 | 井内沉砂打捞工具 |
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- 2010-09-06 CN CN201020518783XU patent/CN201794539U/zh not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101936146A (zh) * | 2010-09-06 | 2011-01-05 | 中国海洋石油总公司 | 井下工具的自清洁式排砂装置 |
CN107956444A (zh) * | 2016-10-18 | 2018-04-24 | 中国石油化工股份有限公司 | 井内沉砂打捞工具 |
CN107414030A (zh) * | 2017-06-20 | 2017-12-01 | 珠海肯赛科有色金属有限公司 | 一种用于铸造制芯模具的自清洁排气塞 |
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Legal Events
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170126 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Patentee after: Tianjin Branch of CNOOC (China) Limited Address before: 100010 Dongcheng District, Chaoyangmen, North Street, No. 25, ocean Oil Mansion, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. Patentee before: Tianjin Branch of CNOOC (China) Limited Patentee before: CNOOC Energy Technology & Sevices-Supervision &Technology Co. |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20170906 |