CN202108471U - 一种采油管柱泄油装置 - Google Patents
一种采油管柱泄油装置 Download PDFInfo
- Publication number
- CN202108471U CN202108471U CN2011201488122U CN201120148812U CN202108471U CN 202108471 U CN202108471 U CN 202108471U CN 2011201488122 U CN2011201488122 U CN 2011201488122U CN 201120148812 U CN201120148812 U CN 201120148812U CN 202108471 U CN202108471 U CN 202108471U
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- oil
- pull rod
- shear pin
- pull
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Application Number | Priority Date | Filing Date | Title |
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CN2011201488122U CN202108471U (zh) | 2011-05-12 | 2011-05-12 | 一种采油管柱泄油装置 |
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CN2011201488122U CN202108471U (zh) | 2011-05-12 | 2011-05-12 | 一种采油管柱泄油装置 |
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CN202108471U true CN202108471U (zh) | 2012-01-11 |
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CN2011201488122U Expired - Lifetime CN202108471U (zh) | 2011-05-12 | 2011-05-12 | 一种采油管柱泄油装置 |
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CN (1) | CN202108471U (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105696964A (zh) * | 2015-09-28 | 2016-06-22 | 梁伟成 | 防喷保护封隔器 |
-
2011
- 2011-05-12 CN CN2011201488122U patent/CN202108471U/zh not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105696964A (zh) * | 2015-09-28 | 2016-06-22 | 梁伟成 | 防喷保护封隔器 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Qian Yuan new material Co., Ltd Assignor: Zhou Guoan|Yu Youhong Contract record no.: 2011210000143 Denomination of utility model: Oil release device of oil production pipe string Granted publication date: 20120111 License type: Exclusive License Record date: 20111010 Assignee: Liaoning Kuak Petroleum Equipment Co., Ltd. Assignor: Zhao Guangyou Contract record no.: 2011210000147 Denomination of utility model: Oil release device of oil production pipe string Granted publication date: 20120111 License type: Exclusive License Record date: 20111018 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20120111 |