 Its design was patented by Samuel Colt on February 25, 1836, in the United States, France, and England, and it derived its name from being produced in Paterson, New Jersey.Initially this 5-shot revolver was produced in .28 caliber, with a .36 caliber model following a year later.As originally designed and produced, no loading lever was included with the revolver; a user had to partially disassemble the revolver to re-load it.