The first U.S. Patent was a method of producing pot ash and pearl ash, issued to Samuel Hopkins on July 31, 1790.

- U.S. Patent No. 1X

The first numbered patent was issued on July 13, 1836 to John Ruggles, a U.S. senator from Maine and the author of the 1836 Patent Act.

- U.S. Patent No. 1

"Manner of Bouying Vessels," was issued to Abraham Lincoln on May 22, 1849. This is the only patent ever issued to a president.

- U.S. Patent No. 6,469