1870 – Leon Bollee was born this year. He was a French automobile manufacturer and inventor.
1887 – He began work on three calculating machines: the Direct Multiplier, the Calculating Board and the Arithmographe.
1889 – He invented 1st calculator capable of direct multiplication and it won a gold medal at the Paris Exposition.
1895 – Bollee and his father entered a steam car, La Nouvelle.
– He developed a gasoline-powered vehicle, which was entered in the Paris-Marseille-Paris race.
– He founded the company Léon Bollée Automobiles in Mans.
1895 – He invented the Voiturette (translated as autoette).
1896 – He patented and began manufacturing the three-wheeled vehicles.
1903 – He started producing larger vehicles.
1911 – Léon Bollée was injured in a flying accident and never recovered.
1913 – He died of heart problem this year.