There is no getting past the laws of physics.
If these devices are producing thrust, then there is an equal and opposite thrust. There is no avoiding that.
The device is described as cone-shaped, with the thrust occurring at the nose of the cone. I wonder if whoever is looking at these devices is unable to measure the opposite thrust because it is spread over the base of the cone and the measuring instruments are not sensitive enough to pick it up.
actually it really does exist.....
I've seen drawings of the device. It has no port for anything to escape from, unless the microwaves are somehow penetrating the metal base. If they can do that, then you'd need a heck of a lot more shielding for the microwave in your kitchen than the mesh it has on front that allows you to view what is cooking.
