15个副省级城市有效专利失效速度测度与评价

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1000-7695|36|21|57-61

ISSN: 1000-7695

Source: 科技管理研究, Vol.36, Iss.21, 2016-01, pp. : 57-61

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Abstract