What inventions wasinvented in may?

Many notable inventions have been introduced in May throughout history. For instance, the first practical typewriter was patented by Christopher Latham Sholes on June 23, 1868, but earlier prototypes were developed in May. Additionally, the invention of the first successful electric elevator by Elisha Otis was demonstrated in May 1854, revolutionizing vertical transportation. These innovations have significantly impacted communication and urban infrastructure.