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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 |
| 3981238 | Method and apparatus for determining doctor blade position in a rotogravure process A method and apparatus for determining the relative position between a doctor blade and a printing cylinder in a rotogravure printing process in which the thickness of the layer of residual ink which is allowed to pass by the doctor blade is used as a con... | 09/21/1976 |
| 3952650 | Doctor-blade holder with cleaning means In a doctor-blade system consisting of a strip of flexible material supported by a blade-holder fitted with resilient means for applying the free marginal portion of the doctor-blade against the screen during printing, at least one internal longitudinal p... | 04/27/1976 |
| 3930445 | Squeegee assembly for use on a screen printing machine A squeegee assembly for use on a screen printing machine which includes a squeegee holder and associated squeegee blade having a liquid filled tubular member for exerting a liquid or hydraulic pressure on the squeegee blade in a manner whereby the pressur... | 01/06/1976 |
