CN203296710U - 一种石油套管 - Google Patents
一种石油套管 Download PDFInfo
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- CN203296710U CN203296710U CN2013203038410U CN201320303841U CN203296710U CN 203296710 U CN203296710 U CN 203296710U CN 2013203038410 U CN2013203038410 U CN 2013203038410U CN 201320303841 U CN201320303841 U CN 201320303841U CN 203296710 U CN203296710 U CN 203296710U
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CN2013203038410U CN203296710U (zh) | 2013-05-30 | 2013-05-30 | 一种石油套管 |
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CN2013203038410U CN203296710U (zh) | 2013-05-30 | 2013-05-30 | 一种石油套管 |
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CN203296710U true CN203296710U (zh) | 2013-11-20 |
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CN2013203038410U Expired - Fee Related CN203296710U (zh) | 2013-05-30 | 2013-05-30 | 一种石油套管 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107795286A (zh) * | 2017-11-21 | 2018-03-13 | 西南石油大学 | 一种直连型油套管多级气密封结构 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107795286A (zh) * | 2017-11-21 | 2018-03-13 | 西南石油大学 | 一种直连型油套管多级气密封结构 |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Petroleum casing pipe and method for manufacturing same Effective date of registration: 20140916 Granted publication date: 20131120 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2014990000757 |
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PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160902 Granted publication date: 20131120 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2014990000757 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Petroleum casing pipe and method for manufacturing same Effective date of registration: 20160902 Granted publication date: 20131120 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2016990000764 |
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PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180625 Granted publication date: 20131120 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2016990000764 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20180530 |
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CF01 | Termination of patent right due to non-payment of annual fee |