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 Herxheimer Karl Herxheimer Karl Herxheimer (June 26, 1861 – December 6, 1942) was a German-Jewish dermatologist who was a native of Wiesbaden. He studied medicine at the universities of Freiburg, Strasbourg and Würzburg, receiving his doctorate in 1885 with a thesis on cerebral syphilis. Following graduation he worked as an assistant to Karl Weigert at the Institute of Pathology in Frankfurt am Main, and to Albert Neisser at the university skin clinic in Breslau. He later worked with his older brother, Salomon Herxheimer (1841-1899) in Frankfurt, where in 1894, he became director of the municipal dermatology clinic. Along with Paul Ehrlich,