This paper introduces how to use the Chinese National patent information Retrieval System to seek some patent information, and then show you an example.
介绍了如何使用中国专利信息检索系统查找有关专利信息并给出一个实例。
This paper introduces how to use the Chinese National patent information Retrieval System to seek some patent information, and then show you an example.
介绍了如何使用中国专利信息检索系统查找有关专利信息并给出一个实例。
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