On 31 July 1790, the first US patent office opened its doors. The first patent was issued to Samuel Hopkins of Vermont for a new method of making potash. More information at http://www.uspto.gov/.
Image Credit: Wikipedia Commons
On 31 July 1790, the first US patent office opened its doors. The first patent was issued to Samuel Hopkins of Vermont for a new method of making potash. More information at http://www.uspto.gov/.
Image Credit: Wikipedia Commons