The patent office needs to hire more Einsteins.
Or at least examiners who've taken a little bit of physics.
Well...lets stir the pot some. If you want to read about an antigravity craft already flying around, go into your search engine and type in "TR3-B". This is, allegedly, the large flying triangle that has been reported around the world. Remember the UFO sighting a number of years ago in Phoenix witnessed by hundreds if not thousands? If you recall, scores of people described a very large triangular shaped craft that was demonstrating flight characteristics that could not be performed with known technologies.
I'm not sure what to believe but there are too many people claiming to have seen flying triangles not to be somewhat curious about Uncle Sam having a few previously-unknown toys. After all, how long was the SR-71 Blackbird around before you ever saw a picture of it. The F117-A Nighthawk?
Check out the TR3-B websites. Most of them explain the science behind the craft. I'll leave it to you to decide if there is anything to their claims.
PresidentFelon