Petrache Poenaru
Petrache Poenaru (1799 - 1875) was a famous Romanian inventor of the Enlightenment era.
Poenaru, who had studied in Paris and Vienna and, later, completed his specialized studies in England, was a mathematician, physicist, engineer, inventor, teacher and organizer of the educational system, as well as a politician, agronomist, and zootechnologist, founder of the Philharmonic Society, the Botanical Gardens and the National Museum of Antiquities in Bucharest.
While a student in Paris, Petrache Poenaru invented the world's first fountain pen, an invention for which the French Government issued a patent on May 25, 1827.
Poenaru also designed the current tricolour flag of Romania.[citation needed]
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