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28 天
南通市华阳铝制品有限公司取得旗杆用防缠绕旋转环专利,保证回转 ...
金融界2025年3月29日消息,国家知识产权局信息显示,南通市华阳铝制品有限公司取得一项名为“一种旗杆用防缠绕旋转环”的专利,授权公告号 CN 222687135 U,申请日期为2024年7月。 专利摘要显示,本实用新型涉及一种旗杆用防缠绕旋转环,其特征在于:包括旗杆 ...
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