CN207847591U - 一种油管防腐保护装置 - Google Patents
一种油管防腐保护装置 Download PDFInfo
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- CN207847591U CN207847591U CN201721794751.0U CN201721794751U CN207847591U CN 207847591 U CN207847591 U CN 207847591U CN 201721794751 U CN201721794751 U CN 201721794751U CN 207847591 U CN207847591 U CN 207847591U
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Cited By (1)
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CN108131119A (zh) * | 2017-12-20 | 2018-06-08 | 高云东 | 一种油管防腐保护装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108131119A (zh) * | 2017-12-20 | 2018-06-08 | 高云东 | 一种油管防腐保护装置 |
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Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
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: Liu Jiming Patentee before: Gao Yundong |
|
CB03 | Change of inventor or designer information | ||
CB03 | Change of inventor or designer information |
Inventor after: Gao Yundong Inventor before: Gao Yundong Inventor before: Liu Jiming |