Uncovering GPTS with Patent Data
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This paper asks the question: Can we see evidence of General Purpose Technologies in patent data? Using data on three million US patents granted between 1967 and 1999, and their citations received between 1975 and 2002, we construct a number of measures of GPTs, including generality, number of
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美国国家经济研究局创建时间：
2004-11-01
