X-Patent
On July 31, 1790 inventor Samuel Hopkins of Pittsford, Vermont became the first person to be issued a patent in the United States. His patented invention was an improvement in the "making of Pot Ash by a new apparatus & process." The earliest patent law required that a working model of each invention be produced in miniature.
Nathan Ames
Nathan Ames (November 17, 1826 in Roxbury, New Hampshire – August 17, 1865 in Saugus, Massachusetts) was a patent solicitor who held the first patent in the United States for an escalator-like machine. The patent (#25,076) was granted on August 9, 1859, for an invention he called "Revolving Stairs". The escalator had steps mounted on a continuous belt or chain. He also patented machines for improvement in polishing leather during the time when Lynn's shoemaking industry was one of the largest in the world. Another one of his patents was for a polygraph, an early copying machine that operated by using pens connected by wires. Another patent he held was for an improved grater.