CN203296713U - 一种特殊气密封机制的石油套管 - Google Patents
一种特殊气密封机制的石油套管 Download PDFInfo
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- CN203296713U CN203296713U CN2013203038196U CN201320303819U CN203296713U CN 203296713 U CN203296713 U CN 203296713U CN 2013203038196 U CN2013203038196 U CN 2013203038196U CN 201320303819 U CN201320303819 U CN 201320303819U CN 203296713 U CN203296713 U CN 203296713U
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CN2013203038196U CN203296713U (zh) | 2013-05-30 | 2013-05-30 | 一种特殊气密封机制的石油套管 |
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CN2013203038196U CN203296713U (zh) | 2013-05-30 | 2013-05-30 | 一种特殊气密封机制的石油套管 |
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CN2013203038196U Expired - Fee Related CN203296713U (zh) | 2013-05-30 | 2013-05-30 | 一种特殊气密封机制的石油套管 |
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Legal Events
Date | Code | Title | Description |
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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: Oil casing of special air-tight seal mechanism 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 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Oil casing of special air-tight seal mechanism 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 |
|
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 |