On February 25, 1836, Bro. Samuel Colt was granted a patent for his revolving cylinder handgun, what would become the "Patterson" Colt revolver. This gun was the progenitor of every successful revolver design from every U.S. gun maker, but more especially Colt's own Walker, Dragoon, Army and Navy percussion revolvers, as well as the legendary Single Action Army model of 1873.
Colt revolutionized gun making in the 19th century by introducing mass production and assembly lines to what had been the exclusive province of artisan gunsmiths. The company that bears his name is still going strong.