Mapping Technological Trajectories: Evidence from Two Centuries of Patent Data
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下载链接：
https://www.nber.org/papers/w34760
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资源简介：
We introduce a methodology to measure cross-country trends in innovation capability - technological trajectories and implement this on a new rich dataset covering patents between 1836 and 2016 across multiple countries. Intuitively, trajectories are revealed by a countrys sustained increases in
提供机构：
美国国家经济研究局
创建时间：
2026-02-01
