Eugène Adrien Ducretet dating history

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Eugène Adrien Ducretet (November 27, 1844 – 1915) was a French scientific instrument manufacturer, who performed some of the first experiments on wireless telegraphy (radio communication) in France. His father, Louis Joseph Ducretet, was a Savoy textiles merchant who moved to Paris. He never completed a formal education, leaving primary school at age 15. After several years apprenticed to Paris engineer Paul-Gustav Froment, Ducretet opened his own workshop in 1864 at 21 Rue des Ursulines where with a few employees he manufactured classical physics research, teaching and demonstration apparatus, such as galvanometers, Wimshurst machines, and Crookes tubes. Over time his reputation grew and he became instrument supplier to several large Paris educational and scientific institutions. He was awarded a gold medal for his quality instruments at the 1878 Paris Universal Exposition and from then on his firm was a regular presence at important international expositions, winning another gold at the 1881 International Electricity Exposition in Paris. He was made a Knight of the Legion of Honour in 1885.