Superstar singer Michael Jackson co-patented a "Method and means for creating anti-gravity illusion" in 1993.
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| Number | Title | Issue Date |
| 5186060 | Device for measuring belt tension A device for measuring the tension of a belt, which establishes three points of contact on the belt spaced lengthwise on the belt. A middle of the three contact points is a point of contact including a strain gauge. Two other points of contact are on an o... | 02/16/1993 |