| Names: | Born: Georges Émile Joseph Demen˙
Other: Georges Demen˙
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| | Dates: | 1850, 12 June - 1917, 26 December | | Born: | France, Douai | | Died: | France, Paris |
A proponent of physical exercise and an assistant of Etienne-Jules Marey for the chronophotography techniques study movement. In 1892 he patented his Photophone for taking moving images and his Phonoscope for projecting them and was therefore a significant figure in the development of early cinema.Preparing biographies
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