150 Years of Patent Protection
收藏NBER2000-01-01 更新2025-01-04 收录
下载链接：
https://www.nber.org/papers/w7478
下载链接
链接失效反馈官方服务：
资源简介：
This paper examines three sets of explanations for variations in the strength of patent protection across sixty countries and a 150-year period. Wealthier nations are more likely to have patent systems, to allow patentees a longer time to put their patents into practice, and to ratify treaties
提供机构：
美国国家经济研究局
创建时间：
2000-01-01
