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      1. 中国制浆造纸研究院又一项发明专利被授权

        浏览量:686 作者: 来源:中国制浆造纸研究院 时间:2010-02-23 【字号:

           

            由中国制浆造纸研究院申请的发明专利“卷烟用沟槽嘴棒原纸的制造技术”于217获得国家知识产权局专利授权。

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