patents and innovation an empirical study的相關文章
EconPapers: Patents and Innovation: An Empirical Study
瀏覽：1210
日期：2025-05-12
By Edwin Mansfield; Abstract: To what extent would the rate of development and introduction of inventions ......看更多
網友正在看
熱門 導航 文章
![[Android全圖解] Google Maps在手，聖誕跨年行程一把罩 進階篇 ！](https://www.iarticlesnet.com/pub/img/article/4022/1403800229454_xs.jpg)
