US Patent & Trademark Office This is the only official Web site of the United States Patent and Trademark Office, a Performance-Based Organization of the Government of the United States of America, and an Agency of the U. S. Department of Commerce

U.S. Copyright Office is an office of public record for copyright registration and deposit of copyright material.

Gallery of Absurd Patents From the unusual to the bizarre

Historical Inventions Do you want to know the history behind automobiles, radio, television or telephones? Hundreds of historical inventions are listed in this A to Z list. Just select the first letter of the invention you are looking for. From About.com.s

The Inventor's Museum A place where you can learn from the past and dream of the future. It is truly a place where you can reach for the stars.

Thomas Edison's Patents Edison executed 1,093 successful U.S. patent applications in his life. Explore some of the interesting details.

Lenardo Da Vinci Explore this site and learn about this fascinating scientist, inventor, and artist.