全球专利统计数据库(PATSTAT)研究述评

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1673-2286|volume|12|62-68

ISSN: 1673-2286

Source: 数字图书馆论坛, Vol.volume, Iss.12, 2015-01, pp. : 62-68

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Abstract