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Patent Application Information Retrieval

出版	United States Patent and Trademark Office, 2004
URL	http://books.google.com.hk/books?id=bhvIjwEACAAJ&hl=&source=gbs_api

註釋

The Public Patent Application Information Retrieval (PAIR) system displays information regarding issued patents or patents in publication status. To access, you need a patent, application, or publication number.