CN203879547U - 一种煤矿井下瓦斯监测监控分站装置 - Google Patents
一种煤矿井下瓦斯监测监控分站装置 Download PDFInfo
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- CN203879547U CN203879547U CN201420246994.0U CN201420246994U CN203879547U CN 203879547 U CN203879547 U CN 203879547U CN 201420246994 U CN201420246994 U CN 201420246994U CN 203879547 U CN203879547 U CN 203879547U
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CN201420246994.0U CN203879547U (zh) | 2014-05-15 | 2014-05-15 | 一种煤矿井下瓦斯监测监控分站装置 |
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CN201420246994.0U CN203879547U (zh) | 2014-05-15 | 2014-05-15 | 一种煤矿井下瓦斯监测监控分站装置 |
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CN203879547U true CN203879547U (zh) | 2014-10-15 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C53 | Correction of patent for invention or patent application | ||
CB03 | Change of inventor or designer information |
Inventor after: Ji Fubiao Inventor after: Zhang Haibo Inventor after: Xu Xiaoma Inventor after: Li Yongbi Inventor after: Yang Zhanqi Inventor before: Ji Fubiao Inventor before: Zhang Haibo Inventor before: Li Yongbi Inventor before: Yang Zhanqi |
|
COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHI FUBIAO ZHANG HAIBO LI YONGBI YANG ZHANQI TO: ZHI FUBIAO ZHANG HAIBO XUXIAOMA LI YONGBI YANG ZHANQI |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20150515 |
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EXPY | Termination of patent right or utility model |