CN213978845U - 一种混凝土衬砌板 - Google Patents
一种混凝土衬砌板 Download PDFInfo
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CN112459013A (zh) * | 2020-11-16 | 2021-03-09 | 南水北调中线干线工程建设管理局河北分局 | 一种混凝土衬砌板 |
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CN112459013A (zh) * | 2020-11-16 | 2021-03-09 | 南水北调中线干线工程建设管理局河北分局 | 一种混凝土衬砌板 |
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Address after: 050035 building 005, 69 Qilian street, East high tech Zone, Shijiazhuang City, Hebei Province Patentee after: China South to North Water Transfer group middle route Co.,Ltd. Hebei Branch Patentee after: Hebei Water Conservancy Engineering Bureau Group Co.,Ltd. Address before: 050035 building 005, 69 Qilian street, East high tech Zone, Shijiazhuang City, Hebei Province Patentee before: SOUTH BRANCH OF THE SOUTH-TO-NORTH WATER TRANSFER CENTRAL LINE CONSTRUCTION ADMINISTRATION BUREAU, HEBEI BRANCH Patentee before: Hebei Water Conservancy Engineering Bureau |
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Effective date of registration: 20220615 Address after: 050035 building 005, 69 Qilian street, East high tech Zone, Shijiazhuang City, Hebei Province Patentee after: China South to North Water Transfer group middle route Co.,Ltd. Hebei Branch Patentee after: Hebei Water Conservancy Engineering Bureau Group Co.,Ltd. Patentee after: South to North Water Transfer Middle Route Industrial Development Co.,Ltd. Address before: 050035 building 005, 69 Qilian street, East high tech Zone, Shijiazhuang City, Hebei Province Patentee before: China South to North Water Transfer group middle route Co.,Ltd. Hebei Branch Patentee before: Hebei Water Conservancy Engineering Bureau Group Co.,Ltd. |