print email comment close Intellectual Property Network (Delphion) URL: http://www.delphion.com/ Description: Access to the bibliographic data and text of all claims of all patents issued by the United States Patent & Trademark Office (USPTO) from 1971 to present. Updated approximately every two weeks. In addition, you can get images from 1974 to present. Now includes databases of patents from the European Patent Office EPA and EPB patents and World Intellectual Property Office (WIPO) PCT text and images. There are several ways to search - make sure you choose the best for your needs. Library of Congress Subject Headings: Patents LII Database Information: Record 15289 created by Carole Leita on 12/14/1998 Last modification on 01/29/2001 Published: 12/14/1998   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/15289