It's important to note that this is the first US patent. Technically Patent No. 1 is the Locomotive Steam Engine[1]. The US Patent Office burned down in 1836[2]

It's important to note that this is the first US patent. Technically Patent No. 1 is the Locomotive Steam Engine[1]. The US Patent Office burned down in 1836[2] and patents were renumbered from that point on. All previous patents are now listed as X-Patents[3]. 1 - https://patents.google.com/patent/US1 https://patents.google.com/patent/US1 2 - https://en.wikipedia.org/wiki/1836_U.S._Patent_Office_fire https://en.wikipedia.org/wiki/1836_U.S._Patent_Office_fire 3 - https://en.wikipedia.org/wiki/X-Patent https://en.wikipedia.org/wiki/X-Patent