and cameras On 10 January 1888 Le Prince was granted an American patent on a 16-lens device that he claimed could serve as both motion picture camera (which he termed "the receiver or photo-camera") and a projector (which he called " the deliverer or stereopticon"). That same day he took out a near-identical provisional patent for the same devices in Great Britain, proposing "a system of preferably 3, 4, 8, 9, 16 or more lenses". Shortly before the final version was submitted he added a sentence which described a single-lens system, but this was neither fully explained nor illustrated, unlike the several pages of description of the multi-lens system, meaning the single-lens camera was not legally covered by patent. This addendum was submitted on 10 October 1888 and, on 14 October, Le Prince used his single-lens camera to film Roundhay Garden Scene. During the period 1889-1890 he worked with the mechanic James Longley on various "deliverers" (projectors) with one, two, three and sixteen lenses. The images were to be separated, printed and mounted individually, sometimes on a flexible band, moved by metal eyelets. The single lens projector used individual pictures mounted in wooden frames. His assistant, James Longley, claimed the three-lens version was the most successful. Those close to Le Prince have testified to him projecting his first films in his workshop as tests, but they were never presented to anyone outside his immediate circle of family and associates and the nature of the projector is unknown. In 1889 he took French-American dual citizenship in order to establish himself with his family in New York City and to follow up his research. However, he was never able to perform his planned public exhibition at Morris–Jumel Mansion in Manhattan, in September 1890, due to his disappearance. Later recognition Even though Le Prince's achievement is remarkable, with only William Friese-Greene and Wordsworth Donisthorpe achieving anything comparable in the period 1888-1890, his work was largely forgotten until the 1920s, as he disappeared before the first public demonstration of the result of his work, having never shown his invention to any photographic society or scientific institution or the general public. For the April 1894 commercial exploitation of his personal kinetoscope parlor, Thomas Edison is credited in the US as the inventor of cinema, while in France, the Lumière Brothers are hailed as inventors of the Cinématographe device and for the first commercial exhibition of