patents and innovation an empirical study的相關文章
patents and innovation an empirical study的相關公司資訊
patents and innovation an empirical study的相關商品

EconPapers: Patents and Innovation: An Empirical Study
瀏覽:1156
日期:2025-07-11
By Edwin Mansfield; Abstract: To what extent would the rate of development and introduction of inventions ......看更多