CN202577356U - 市政管道检查井井圈防松动装置 - Google Patents
市政管道检查井井圈防松动装置 Download PDFInfo
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CN 201220155229 CN202577356U (zh) | 2012-04-13 | 2012-04-13 | 市政管道检查井井圈防松动装置 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103758154A (zh) * | 2014-01-17 | 2014-04-30 | 国家电网公司 | 一种防错位的安全井盖 |
CN113931231A (zh) * | 2021-08-26 | 2022-01-14 | 昆明理工大学 | 一种检查井井盖支撑垫及其制造方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103758154A (zh) * | 2014-01-17 | 2014-04-30 | 国家电网公司 | 一种防错位的安全井盖 |
CN113931231A (zh) * | 2021-08-26 | 2022-01-14 | 昆明理工大学 | 一种检查井井盖支撑垫及其制造方法 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: QINGDAO HAIDE ROAD + BRIDGE ENGINEERING CO., LTD. Free format text: FORMER OWNER: KEDA GROUP CO., LTD. Effective date: 20130417 |
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C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 257091 DONGYING, SHANDONG PROVINCE TO: 266071 QINGDAO, SHANDONG PROVINCE |
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TR01 | Transfer of patent right |
Effective date of registration: 20130417 Address after: 266071, No. 5, Nanhai Branch, No. 20, Nanhai, Shandong, Qingdao Patentee after: Qingdao Haide Road & Bridge Engineering Co., Ltd. Address before: 257091 Shandong city of Dongying province Dongying District Front Street No. 65 Patentee before: Keda Group Co., Ltd. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150413 |
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EXPY | Termination of patent right or utility model |