There was an article here a couple of months ago [0] on Sharrow Engineering's propeller, which looks very similar. Sharrow were granted their patent [1] earlier

There was an article here a couple of months ago [0] on Sharrow Engineering's propeller, which looks very similar. Sharrow were granted their patent [1] earlier the same year as MIT's [2]. I wonder if this is yet another case of people independently reaching similar conclusions based on other work (tip vortex and cavitation research)? [0] https://news.ycombinator.com/item?id=33949895 https://news.ycombinator.com/item?id=33949895 [1] https://patents.google.com/patent/US9926058B2 https://patents.google.com/patent/US9926058B2 [2] https://patents.google.com/patent/US10836466B2 https://patents.google.com/patent/US10836466B2