CN202915912U - 一种用于电子水准仪夜间测量读数的辅助照明装置 - Google Patents
一种用于电子水准仪夜间测量读数的辅助照明装置 Download PDFInfo
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CN115790309A (zh) * | 2022-12-07 | 2023-03-14 | 广州后作科技有限公司 | 一种电子比例尺及游标卡尺及其应用方法 |
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CN115790309A (zh) * | 2022-12-07 | 2023-03-14 | 广州后作科技有限公司 | 一种电子比例尺及游标卡尺及其应用方法 |
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Address after: 510500 No. 121 martyrs East Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangdong Construction Academy Group Plc Address before: 510500 Building 1, No. 121, martyrs East Road, Guangzhou, Guangdong 106 Patentee before: Guangdong Prov. Inst. of Building Science |
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Effective date of registration: 20180321 Address after: 510500 No. 121 martyrs East Road, Guangzhou, Guangdong, Tianhe District Co-patentee after: Guangdong construction engineering quality safety inspection station Co., Ltd. Patentee after: Guangdong Construction Academy Group Plc Address before: 510500 No. 121 martyrs East Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangdong Construction Academy Group Plc |
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Effective date of registration: 20200115 Address after: 510599 first floor, Fengdong building, No.121, Xianlie East Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: Guangdong construction engineering quality safety inspection station Co., Ltd. Address before: 510500 No. 121 martyrs East Road, Guangzhou, Guangdong, Tianhe District Co-patentee before: Guangdong construction engineering quality safety inspection station Co., Ltd. Patentee before: Guangdong Construction Academy Group Plc |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20191108 |
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CF01 | Termination of patent right due to non-payment of annual fee |