CN211239178U - 一种新型高性能合金钢无缝钢管 - Google Patents
一种新型高性能合金钢无缝钢管 Download PDFInfo
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CN112641227A (zh) * | 2020-12-24 | 2021-04-13 | 任柯颐 | 一种方便汉语言文学查询阅读装置 |
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CN112641227A (zh) * | 2020-12-24 | 2021-04-13 | 任柯颐 | 一种方便汉语言文学查询阅读装置 |
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Effective date of registration: 20210618 Address after: 510000 room 201-3, 60 Beizhan Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Guoyao High Tech Materials Technology Co.,Ltd. Address before: 510000 room 201-61, 60 Beizhan Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Borui Material Technology Co., Ltd |
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Effective date of registration: 20210705 Address after: 510000 room 201-3, 60 Beizhan Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Guoyao High Tech Materials Technology Co.,Ltd. Address before: 510000 room 201-61, 60 Beizhan Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Borui Material Technology Co., Ltd |