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
I Invented Sex Invented Sex" was sung at the 2010 BET Honors on February 1, 2010. He performed the song once again on "106 & Park" on February 11, 2010 for "Love Week" with a medley of "Neighbors Know My Name", and "Say Aah". He again performed it in March 2010 at MTV's Spring Break 2010, in Acapulco, Mexico. Keri Hilson and Usher joined Songz to perform the official remix at WHTA's Jingle Ball in December 2009. Source I Invented Sex "I Invented Sex" is a song by American R&B singer Trey Songz, and features Canadian recording artist Drake. Together, they wrote the