Threshing takes place in a 360-degree area, not just in a small bottom section. Deere liked the idea enough to buy the patents for the Bi-Rotor. But so far, it hasn't brought the concept to market. Deere officials don't talk with outsiders about current research. The Bi-Rotor shares its spot on the shelf with many inventions.
Marketing is a whole different talent.
I built what I think is one of the best machines ever designed. But I couldn't get it to market. Despite that disappointment and despite the book's assertion that he signed a multimillion-dollar deal with Deere, Underwood can't shake the inventing bug. That's why he formed Second Look, and that's why his welder still makes sparks fly late at night in his workshop. Nobody thinks that guy who started Microsoft should retire.