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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 |
| 7828492 | Vehicle barrier system A security barrier system for use with a trafficable surface and a site requiring protection from advancing vehicles includes a composite bed system having a plurality of elevations and comprising a first layer beneath a second layer. The first layer includes a defo... | 11/09/2010 |
| 7371029 | Vehicle barrier system A security barrier system for use with a trafficable surface and a site requiring protection from advancing vehicles includes a visual indicator element having an appearance that is distinctive from the trafficable surface and disposed adjacent to the trafficable su... | 05/13/2008 |
| 7128496 | Vehicle barrier system An adaptable barrier system protects a site of value that is adjacent to a trafficable surface, from impact by a vehicle. The system includes traffic patterns to reduce speed, followed by a first impact element that causes a vehicle to become elevated from the traff... | 10/31/2006 |
| 7104721 | Turntable barrier system An operable barrier system for vehicles includes a turntable for use with a trafficable surface and at least one impact element disposed on the turntable. A drive system is provided to rotate the turntable along the trafficable surface between a first position to pr... | 09/12/2006 |
