Michael Jackson's anti-gravity illusion shoes - GIF and patent
Michael Jackson's anti-gravity illusion shoes. Awarded US patent #5255452 in 1993.
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Jackson was such a good dancer that the illusion worked - it was commonly thought that he was just performing an extremely difficult dance move.
I believe this was Jackson's only patent, co-held with two of his costume designers. Interestingly, the patent mentions a previously-invented similar type of shoe intended to be worn by astronauts working in zero gravity.
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More: https://www.google.com/patents/US5255452