Leo Fender
In the early 1940s, Doc Kauffman and Leo Fender would enter a business partnership, forming the K&amp;F company in 1945. K&amp;F only lasted 3 years, having produced amplifiers and lap steel guitars in small quantities. After Kauffman left, K&amp;F transformed to Fender. Kauffman and Fender remained friends until Kauffman's death in 1990. Doc Kauffman considered Leo Fender such a close friend, Leo was listed as next of kin, after Doc's children, in Doc's final will &amp; testament. Leo died just one year after Doc in 1991.