Google Patent Search
ArnoldIT.com made available the collection of Google patent documents from 1998 through 2008. Perfect Search Corp. indexed this corpus and created a publicly accessible search system with three features not previously available without charge:* The Perfect Search high speed search system
* A corpus consisting of XHTML versions of the USPTO Google patent documents
* Hot links to the PDF image file of the patent document.
You can run queries against this corpus and compare your results to those available from the USPTO search system, Google's patent search, and other services such as FreePatentsOnline.com, among others. More information about ArnoldIT.com and its monographs about Google patent disclosures is at www.arnoldit.com/sitemap.html.