CN104466829A - 一种电力管道封堵器 - Google Patents
一种电力管道封堵器 Download PDFInfo
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- CN104466829A CN104466829A CN201410762539.0A CN201410762539A CN104466829A CN 104466829 A CN104466829 A CN 104466829A CN 201410762539 A CN201410762539 A CN 201410762539A CN 104466829 A CN104466829 A CN 104466829A
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CN201410762539.0A CN104466829B (zh) | 2014-12-14 | 2014-12-14 | 一种电力管道封堵器 |
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CN201410762539.0A CN104466829B (zh) | 2014-12-14 | 2014-12-14 | 一种电力管道封堵器 |
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CN104466829A true CN104466829A (zh) | 2015-03-25 |
CN104466829B CN104466829B (zh) | 2018-05-01 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993103A (en) * | 1975-09-18 | 1976-11-23 | Inner-Tite (A Division Of Yara Engineering Corporation) | Pipe line expansion plugs and tools |
EP0586944A1 (de) * | 1992-09-05 | 1994-03-16 | Doyma Rohrdurchführungstechnik Hans-Ullrich Ihlenfeldt | Rohr-Dichtungseinsatz mit Zentriereinrichtung |
CN201582526U (zh) * | 2009-11-25 | 2010-09-15 | 王维平 | 船用管塞 |
CN203099207U (zh) * | 2013-03-19 | 2013-07-31 | 何伟林 | 管道密封塞 |
CN204271602U (zh) * | 2014-12-14 | 2015-04-15 | 国家电网公司 | 一种电力管道封堵器 |
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2014
- 2014-12-14 CN CN201410762539.0A patent/CN104466829B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993103A (en) * | 1975-09-18 | 1976-11-23 | Inner-Tite (A Division Of Yara Engineering Corporation) | Pipe line expansion plugs and tools |
EP0586944A1 (de) * | 1992-09-05 | 1994-03-16 | Doyma Rohrdurchführungstechnik Hans-Ullrich Ihlenfeldt | Rohr-Dichtungseinsatz mit Zentriereinrichtung |
CN201582526U (zh) * | 2009-11-25 | 2010-09-15 | 王维平 | 船用管塞 |
CN203099207U (zh) * | 2013-03-19 | 2013-07-31 | 何伟林 | 管道密封塞 |
CN204271602U (zh) * | 2014-12-14 | 2015-04-15 | 国家电网公司 | 一种电力管道封堵器 |
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CN104466829B (zh) | 2018-05-01 |
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CB03 | Change of inventor or designer information | ||
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Inventor after: Liu Wei Inventor after: Li Fang Inventor after: Ren Jie Inventor after: Zhang Leilei Inventor after: Xu De Inventor after: Wang Hui Inventor after: Kong Liang Inventor after: Liu Dawei Inventor after: Niu Chuang Inventor after: Wang Xu Inventor after: Lin Xianglei Inventor after: Wang Meng Inventor before: Gao Hongying Inventor before: Wen Yan Inventor before: Zhou Weidong Inventor before: Lin Xianglei Inventor before: Zhang Liyue Inventor before: Liu Jianguang Inventor before: Other inventor requests not to publish the name |
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