CN208395955U - 一种地下水管道通气井结构 - Google Patents
一种地下水管道通气井结构 Download PDFInfo
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CN114197614A (zh) * | 2021-12-03 | 2022-03-18 | 东南大学建筑设计研究院有限公司 | 用于排水管道的通气检查机构、排水系统及其使用方法 |
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CN114197614A (zh) * | 2021-12-03 | 2022-03-18 | 东南大学建筑设计研究院有限公司 | 用于排水管道的通气检查机构、排水系统及其使用方法 |
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TR01 | Transfer of patent right |
Effective date of registration: 20191210 Address after: 645350 No.02, floor 2, unit 02, building 19, block C6, xinshidiao District, Pingshan Town, Pingshan County, Yibin City, Sichuan Province Patentee after: Sichuan Shibang Construction Engineering Co., Ltd Address before: 211700 No. 90 Shiliying Street, Xuyi County, Huaian City, Jiangsu Province (12th Floor, Shanshui Commercial Building) Patentee before: Gao Xuan |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190118 Termination date: 20210328 |
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CF01 | Termination of patent right due to non-payment of annual fee |