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 Kehrbach Karl Kehrbach Karl Kehrbach (22 August 1846, Neustadt an der Orla – 21 October 1905, Charlottenburg) was a German pedagogue best known as editor of the multi-volume " Monumenta Germaniae Paedagogica". He studied pedagogy at the University of Leipzig, and from 1874 was a member of Tuiskon Ziller's educational seminar. For several years he worked as a teacher, and for a period of time served as a librarian at the University of Halle. From 1883 he lived in Berlin-Charlottenburg as a private scholar, receiving the title of professor in 1894. He was a founder of the "Gesellschaft für deutsche Erziehungs-