Carl Elsener Sr. Carl Elsener Sr. Carl Elsener Sr. (also known as Charles Elsener, born 6 July 1922 in Ibach, † 1 June 2013 in Schwyz) was a Swiss entrepreneur. Carl Elsener was the grandson of Karl Elsener (1860-1918) and the son of Carl Elsener (1886-1950). Karl Elsener had opened a factory in Ibach for the production of knives and surgical instruments, from which the knife factory Victorinox developed. Carl Elsener led the company initially with his father and his brother Eduard Elsener (b. 1926). After the death of his father in 1950, he took over the management. The Swiss Army Knife is
Karl Wilhelm von Kupffer Karl Wilhelm von Kupffer Karl Wilhelm von Kupffer (14 November 1829 – 16 December 1902) was a Baltic German anatomist who discovered stellate macrophage cells that bear his name. He was the eldest son of pastor Karl Hermann Kupffer (1797-1860). In 1854, he obtained his medical doctorate from the University of Dorpat, where shortly afterwards he served as an assistant to Friedrich Heinrich Bidder (1810-1894). In 1856-57 he took a scientific journey to Vienna, Berlin and Göttingen, an extended trip in which he studied physiology with Emil Du Bois-Reymond (1818-1896) and Johannes Peter Müller (1801-1858). Afterwards, he returned to Dorpat,