Download or read book Derwent World Patents Index written by Derwent Publications, Ltd and published by . This book was released on 2005 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Derwent Innovations Index written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Index contains source patents in chemical, electronic & electrical engineering, and mechanical engineering. Updated weekly, the index includes source patents received from the 40 patent-issuing authorities. Coverage includes medical devices. Database links forward in time to citing patents and backward in time to cited references. DII includes the basic patent information from Derwent World Patents Index (DWPI), patent citations in Derwent Patents Citation Index (DPCI), and links to citations in Web of Science. Coverage for many source patents begins in 1963.
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Download or read book World Patents Index written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Patents Index written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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