美国授权专利维持时间与前引指数相关性实证研究
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 10-1332|volume|2|77-82
ISSN: 10-1332
Source: 专利代理, Vol.volume, Iss.2, 2017-01, pp. : 77-82
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Abstract