This paper introduces how to use the Chinese National Patent Information Retrieval System to seek some patent information, and then show you an example.
凌建军,黄鹂. 中国专利信息检索系统的使用[J]. 现代图书情报技术, 2000, 16(6): 48-50.
Ling Jianjun,Huang Li. How to Use the Chinese National Patent Information Retrieval System. New Technology of Library and Information Service, 2000, 16(6): 48-50.