JD beat IH to the market with the first modern successful corn header. But not by much. I heard that JD was in turn getting sued by IH over their mold board plow trip design about the time the corn header fight was going on. How many different ways can you design a mold board plow. There are a lot of different subtle ways to design the same thing. For example JD was the first on the market with a hay thrower and they had it patented pretty tight. But NH and others soon started selling bale throwers that did not infringe on the patent even though they accomplished the same result. JD used a swinging arm/pan and the other used continuous running belts or something along those lines. Patents don't mean much. Its how you defend them. Ever looked at some of this old machinery and seen the fine print on the side saying "covered under the following patents" and then a lists bunch of patents. Also, the GP was a 3 row tractor that straddled the row. You know kinda like the Farmall A, Cub, and their successors that came later. Plus there is a lot the general public doesn't know pertaining to who has been paying who on patent rights and royalties. Did you know IH had to pay AC for use of their patents covering the B. The auger bed introduced the JD 00 series was patented by JD. IH did their damnest to not use it during testing of the AF but eventually had to use some form of it. Don't know if any royalties were exchanged there. Even old man McCormick was constantly suing others and getting sued just building something simple as a reaper. He won some and lost some too.