CN203742661U - 一种用于矿井下瓦斯抽放管道的排渣水装置 - Google Patents
一种用于矿井下瓦斯抽放管道的排渣水装置 Download PDFInfo
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- CN203742661U CN203742661U CN201420138270.4U CN201420138270U CN203742661U CN 203742661 U CN203742661 U CN 203742661U CN 201420138270 U CN201420138270 U CN 201420138270U CN 203742661 U CN203742661 U CN 203742661U
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Owner name: BEIJING ZHONGKUANG DADI EARTH SCOPE ENGINEERING TE Free format text: FORMER OWNER: BEIJING CMS INFORMATION TECHNOLOGY CO., LTD. Effective date: 20150407 |
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Effective date of registration: 20150407 Address after: 100070, Beijing, Fengtai District Science City Road No. 1, No. 3, building 15 Patentee after: Beijing chats the earth survey of the earth engineering company limited Address before: 100070, Beijing, Fengtai District Science City Road No. 1, No. 3, building 15 Patentee before: BEIJING CMS INFORMATION TECHNOLOGY CO., LTD. |
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Granted publication date: 20140730 Termination date: 20180325 |
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CF01 | Termination of patent right due to non-payment of annual fee |