Bollee Calculator
"In 1889, a 19-year old Frenchman, Leon Bollee of Le Mans, unaware of Verea's patent, built his own machine, a "calculer." The machine was a direct multiplier, using the principle of a built-in multiplication table.

It was huge, handsome and impractical. Bollee built several of these machines as well as other smaller types, but in later years became more interested in designing, building and racing light automobiles."

David Weil,
Computer Museum of America.

For a transcription of the Patent issued in 1896 to Léon Bollée, of Mans, France, and other related links, visit Andries de Man's web site.

X-Number World of Calculators