One of the most notable business jet manufacturers of all time is known as Learjet. It was one of the first manufacturers to begin producing a purpose-built business jet. Originally, the company was founded by the legendary aircraft designer, Bill Lear, in the 1960s. After working with the Swiss American Aircraft Corporation for several years, Lear moved his operations to Wichita, Kansas. This led to the development of the first business jet, which was designated the Learjet 23.