PCT专利查询

PCT专利查询提供知识产权常用网站、等服务，网站地址是：https://patentscope.wipo.int/search/en/structuredSearch.jsf，This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections. This search facility features: flexible search syntax; automatic word stemming and relevance ranking; as well as graphical results.
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