and outdoor use. Seeing the limitations of electrical supply without the reliable support of a national grid, in 1895 he took the recent discovery of acetylene light and had soon harnessed it for domestic lighting. Among his 75 innovations,(see below) he also developed an electric massaging machine, an electric keyboard instrument based on Savart's wheel, a battery-powered wearable lifejacket, a water-jet propelled boat and a streamlined bicycle, as well as several children's toys. In 1902, Trouvé was working on his latest innovation, a small portable device which used ultra-violet light to treat skin diseases, the prototype of PUVA therapy when he accidentally cut his thumb and index finger. Neglecting the wound, sepsis set in and after amputations at the Saint-Louis Hospital, Paris, the 63-year-old inventor died on 27 July 1902. Disappearance and rehabilitation When the obligatory concession for his tomb in the cemetery of his native town of Descartes was not renewed, Trouvé’s remains were thrown into the common grave. His archives were destroyed in February 1980 during an accidental fire in the Town Hall. In 2012, following a French biography by English transport historian Kevin Desmond, a commemorative plaque was officially unveiled on the site of his birthplace. Four years later, following an extended English-language biography, on 15 October 2016, a second plaque was officially unveiled by Desmond and Jacques Boutault, Mayor of Paris 2nd District, on the wall outside his former workshop, 14 rue Vivienne. The search for rare surviving examples of his instruments has become worldwide. On 24 September a Trouvé/Cadet-Picard gold skull stick pin automaton sold at Bonhams of London for $8,000. An exhibition celebrating the 180th anniversary of his birth, entitled "Gustave Trouvé, the da Vinci of the 19th Century", took place at his birthplace in Descartes, France during the month of May 2019. Sixteen of his original instruments were brought together, while a line-up of modern electric cars, boats, drones and bicycles were assembled in his honour. In 2020, A Canadian website Plugboats.com launched a competition to vote online for the best electric boats of the year calling it the Gustave Trouvé Award. The medals portraying Trouvé were called the Gussies (Gustave). Over 4,000 people voted between May and July 2020. In April 2021 Christian Richards, British classic bicycle engineer built a replica of Trouvé's tricycle and tested it along the rue Valois, Paris 2ème 140 years after Trouvé had made his trials with