An anti-gravity device based on inertial propulsion earned U. Patent for inventors Harvey Emanuel Fiala (Downey, CA), John Emil Fiala (Spring, TX) and John-Arthur Fiala (Spring, TX). Tesla Technology, Science And Technology, Nikola Tesla Patents, Comets And Asteroids, Alternative Energie, 3d Cnc, Electrical Projects, Amusement Park Rides, Anti Gravity