Karl Elsener (inventor) his grandson Carl Elsener senior (1922-2013) and his great-grandson Carl Elsener Jr. (born 1958) led the Victorinox company. Karl Elsener (inventor) Karl Elsener (9 October 1860 - 26 December 1918) was a Swiss cutler, inventor and entrepreneur. Karl Elsener completed an apprenticeship as a knife maker in Zug. After some journeyman years he opened a factory in Ibach, Switzerland in 1884 for the manufacture of knives and surgical instruments. He invented the Swiss army knife in 1891 and developed his knife manufacturing company into what has become Victorinox. From 1912 to 1918 Elsener was a member of the cantonal parliament
Karl Langer Karl Langer Karl Langer, Ritter von Edenberg (15 April 1819, Vienna – 8 December 1887) was an Austrian anatomist. He is known for his work in the field of topographical anatomy. He studied medicine at the Universities of Vienna and Prague, afterwards working as a prosector in Vienna under Joseph Hyrtl (1810–1894). In 1856 he became a professor at the Josephinum, later serving as director of the second institute of anatomy at the University of Vienna (1870–74). In 1874 he succeeded Hyrtl as director of the first institute of anatomy. With Christian August Voigt (1808–1890), he was tasked with planning