George Fullerton was Leo Fender's partner since the Fender Radio Shop days around 1945 when they met. George had similar interest as Leo in electronics and fixing up amplifiers and radios. Like Leo, he also repaired home equipment radios, but he worked for another company. but would hang around Leo´s shop very often. But them two got acquainted well, as George tag along and join event that Leo used to supply amplification for. He was also around when Doc Kauffman established and ran K&L with Leo for a short time before Kaufmann left.

around 1947, Leo set up his first "shack" in Pomona Avenue where he would start the humble beginning of guitar work. There he he would tinker with lap steel guitars and he asked George to help out and fix and repair returns of several lap steels he had lying around. This was the start of the workmanship between the two. Fender would eventually leave the shop into the hands of Dale Hyatt to run while Leo had other plans of building something new he was designing on. Him and Leo would work long hours designing the guitar that would become the Broadcaster prototype. The guitar would have the Body design we know, and Bridge design almost identical to the vintage one we have today, but only had two pots, a simple pickguard and a neck with a paddle headstock, similar to an acoustic. They would also design the cutaway for the player to be able to reach the upper frets. Although Bigsby had beat them to it on that feature.

The Esquire and Broadcaster was born after much work and design together with musicians at the time. Both were named by Leo at first. But had to drop the Broadcaster because Gretch used that name on their product line and they sent a letter asking them to drop it. "Telecaster" was then given by Don Randall.

They took the guitar to Jimmy Bryant to play. He really liked it and soon the word spread around and more would want one and they soon had more orders than ever before.

George and Fender then opened the Richmond Avenue location and he was there to oversee designs of the Stratocaster as well. More people were brought in. Don Randall, Forrest White and Freddie Tavares eventually. George, however did not get a fully titled position until 1948. When Leo sold Fender to CBS, George stayed on with CBS until 1970 when he left. He eventually would come up with custom colors for CBS to try out.

Leo then started up CLF Research in 1966, barely a year after he sold Fender. At CLF, Leo was a consultant for CBS and helped out designing new feature for them which was part of the sales deal. George would eventually team up with Leo again after 1970 when he left Fender Company, and work with him together trough the short upbringing of Music Man Guitars. And eventually they started up G&L Guitars together with Dale Hyatt in 1979 where Leo held his position until he died in 1991.

George would write a book called "Guitars from George & Leo: How Leo Fender and I Built G&L Guitars".

George Fullerton passed away on independece day, July 4th, 2009 in Fullerton California.