Unveiling the geography of historical patents in the United States from 1836 to 1975

标题
Unveiling the geography of historical patents in the United States from 1836 to 1975
作者
关键词
-
出版物
Scientific Data
Volume 3, Issue -, Pages 160074
出版商
Springer Nature
发表日期
2016-08-30
DOI
10.1038/sdata.2016.74

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