when was the first dyson vacuum cleaner invented
Dyson (company) Dyson developed 5,127 prototype designs between 1979 and 1984. The first prototype vacuum cleaner, a red and blue machine, brought Dyson little success, as he struggled to find a licensee for his machine in the UK and America. Manufacturing companies like Hoover did not want to license the design, probably because the vacuum bag market was worth $500m so Dyson was a threat to their profits.[5]
History of the automobile Steam-powered self-propelled vehicles large enough to transport people and cargo were first devised in the late 18th century. Nicolas-Joseph Cugnot demonstrated his fardier Ã  vapeur ("steam dray"), an experimental steam-driven artillery tractor, in 1770 and 1771. As Cugnot's design proved to be impractical, his invention was not developed in his native France. The center of innovation shifted to Great Britain. By 1784, William Murdoch had built a working model of a steam carriage in Redruth [5] and in 1801 Richard Trevithick was running a full-sized vehicle on the roads in Camborne. The first automobile patent in the United States was granted to Oliver Evans in 1789.