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 Peglau cities as well. Karl Peglau died in Berlin, Germany, on November 29, 2009, at the age of 82. He was survived by his wife, Hildegard, and their two children. Karl Peglau Karl Peglau (May 18, 1927 – November 29, 2009) was a German traffic psychologist who invented the iconic Ampelmännchen traffic symbols used in the former East Germany in 1961. The Ampelmännchen depicts a symbolic person on the red and green pedestrian traffic lights. Peglau wanted to create a traffic light that would be both appealing to children, yet easily accessible and understandable for elderly Germans. He deliberately designed the