CN201221342Y - 一种抗压抗扭高强度v槽自洁防砂筛管 - Google Patents
一种抗压抗扭高强度v槽自洁防砂筛管 Download PDFInfo
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- CN201221342Y CN201221342Y CNU2008201031223U CN200820103122U CN201221342Y CN 201221342 Y CN201221342 Y CN 201221342Y CN U2008201031223 U CNU2008201031223 U CN U2008201031223U CN 200820103122 U CN200820103122 U CN 200820103122U CN 201221342 Y CN201221342 Y CN 201221342Y
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- screen pipe
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- proof screen
- cleaning sand
- pipe according
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CNU2008201031223U CN201221342Y (zh) | 2008-07-23 | 2008-07-23 | 一种抗压抗扭高强度v槽自洁防砂筛管 |
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CNU2008201031223U CN201221342Y (zh) | 2008-07-23 | 2008-07-23 | 一种抗压抗扭高强度v槽自洁防砂筛管 |
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CN201221342Y true CN201221342Y (zh) | 2009-04-15 |
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CNU2008201031223U Expired - Fee Related CN201221342Y (zh) | 2008-07-23 | 2008-07-23 | 一种抗压抗扭高强度v槽自洁防砂筛管 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110513083A (zh) * | 2019-08-27 | 2019-11-29 | 中国石油大学(华东) | 一种可承接煤粉油管 |
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2008
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110513083A (zh) * | 2019-08-27 | 2019-11-29 | 中国石油大学(华东) | 一种可承接煤粉油管 |
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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: Fuzhou Rongding Metallurgy Environmental Protection Equipment Co., Ltd. Assignor: Zhan Qiguo Contract fulfillment period: 2009.10.10 to 2015.1.1 Contract record no.: 2009350000260 Denomination of utility model: Anti-pressure anti-torsion high-strength V-groove self-cleaning sand-proof screen pipe Granted publication date: 20090415 License type: Exclusive license Record date: 20091201 |
|
LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.10.10 TO 2015.1.1; CHANGE OF CONTRACT Name of requester: FUZHOU RONGDING METALLURGICAL ENVIRONMENTAL EQUIPM Effective date: 20091201 |
|
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: 20090415 Termination date: 20160723 |