Karl Elsener (inventor) 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 of the Canton of Schwyz. He was married three times. After him his son, Carl Elsener (1886-1950), and
Karl Liebknecht (SPD). Karl Liebknecht became an exponent of Marxist ideas during his study of law and political economy in Leipzig and Humboldt University of Berlin. After serving with the Imperial Pioneer Guards in Potsdam from 1893 to 1894 and internships in Arnsberg and Paderborn from 1894 to 1898, he earned his doctorate at Würzburg in 1897 and moved to Berlin in 1899, where he opened a lawyer's office with his brother, Theodor. Liebknecht married Julia Paradies on 8 May 1900; the couple had two sons and a daughter before Julia died in 1911. As a lawyer, Liebknecht often defended other left