摘要
本文简要介绍了因特网上常用的免费专利信息检索网站。从数据库的种类、收录范围、更新频率、检索功能及输出功能等方面对几个主要网站进行了评析并指出了目前因特网上免费专利信息检索网站普遍存在的问题 。
Several import websites which provide free patent information search are introduced in this paper. They are compared and analysed from five areas including database kinds,database contents,update period,searching,displaying and printing. The author also points out some problems existed in these websites.
出处
《情报学报》
CSSCI
北大核心
2001年第6期684-689,共6页
Journal of the China Society for Scientific and Technical Information
