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专利数据库

放大字体  缩小字体 发布日期:2006-07-06

DPD - DNA Patent db

Ag Patents - Agricultural Biotechnology patents from the USDA

USPTO patent db - USA Patent and Trademark Office patent db

Esp@cenet- Patent information database from the European Patent Office (worldwide coverage)

The Delphion Intellectual Property Network (IPN) for searching, viewing, and analyzing patent documents.

 
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