Charles Xavier Thomas

Charles Xavier Thomas de Colmar was a French inventor and entrepreneur best known for designing, patenting, and manufacturing the first commercially successful mechanical calculator, known as the Arithmometer.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

• Charles Xavier Thomas and Karl Drais were born the same year
• Charles Xavier Thomas was born 1 year before Pavel Schilling
• Charles Xavier Thomas was born 1 year before Marc Seguin
• Charles Xavier Thomas was born 2 years after William Sturgeon
• Charles Xavier Thomas was born 2 years before Johann Nicolaus von Dreyse

Timeline

1. William SturgeonMay 22, 1783 – December 4, 1850
2. Charles Xavier Thomas (this page)May 5, 1785 – March 12, 1870
3. Karl DraisApril 29, 1785 – December 10, 1851
4. Marc SeguinApril 20, 1786 – February 24, 1875
5. Pavel SchillingApril 5, 1786 – July 25, 1837
6. Johann Nicolaus von DreyseNovember 20, 1787 – December 9, 1867

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