 The versions produced by Ford had every component (including bolt heads) marked with an "F", and early on Ford also stamped their name in large letters in their trademark script, embossed in the rear panel of their jeeps.Willys followed the Ford pattern by stamping 'Willys' into several body parts, but the U.S. government objected to this practice, and both parties stopped this in 1942.In spite of persistent advertising by both car and component manufacturers' contributions to the production of the successful jeeps during the war, no "Jeep"-branded vehicles were built until the 1945 Willys CJ-2A.