All of that C.Wright/J.Deere technology is owned by ECMH now.
What that article describes is what ECMH has perfected. Big news back then, even bigger now. Good find hhonow. Ford wanted it, GM for the Corvette, Audi, Mercedes, Norton, Mazda, Caterpiller, Cummins and on and on. Once the EPA cert. is in ECMH hands they've done what tyhe other couldn't. Now who's gonna get in line for the low emissions rotaries? Plenty I suspect.