Robert Ambrogi's LawSites

Google Patent Search is a new Google feature that searches the full text of more than 7 million U.S. patents. It covers the entire collection of USPTO patents, from the 1790s through the middle of 2006. It does not currently include patent applications, international patents, or U.S. patents issued over the last few months, but an explanatory note says that coverage will expand. Advanced searching allows you to search by patent number, inventor, classification and date.