Nowadays, online patent databases make patent retrieval more convenient, while patent analysis tools make patent analysis more efficient.
网上专利数据库方便了专利信息的检索，而相应专利分析软件的出现又使得专利分析更加快捷有效。
Introduces the web sites and contents of patent databases well-known at home and abroad as well as the free retrieval of patent information on the Internet.
重点介绍因特网上国内外著名的专利数据库的网址、内容和专利文献的免费检索方法。
Free information databases on Internet have brought new chances and challenges to the work of patent novelty searchng.
随着因特网免费信息数据库的日益丰富，给专利查新工作带来了新的机遇与挑战。
Free information databases on Internet have brought new chances and challenges to the work of patent novelty searchng.
随着因特网免费信息数据库的日益丰富，给专利查新工作带来了新的机遇与挑战。
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