This patent looks like it has some relation to the Woodward's effect. If you read it thru it makes many good points and it looks to be easy to duplicate, the materials are easy to buy and not costly. The question is if anything is left out in the details of the patent?

nextbigfuture.com/2019/02/if-t…rek-technology-world.html

The file RTSC_1.pdf is the patent for superconductivity, and the Piezoelectric Effect and polarization of the vacuum are prominent in all four patents.