介绍因特网上美国Delph ion 知识产权网站( IPN ) 的专利信息资源概况、检索方法、利用技巧。
Recommend the IPN s summary of patent information, using skill and how to search.
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[1]http://www.delphion.com [2]http://www.delphion.com/sitemap [3]http://www.delphion.com/help [4]http://www.delphion.com/collect [5]http://www.delphion.com/details [6]http://www.delphion.com/lic-search [7]http://www.delphion.com/derwent
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