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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 |
| 6810591 | Drawing aid device A device enabling a user to reproduce an observed scene on a drawing board support including a first mirror; at least one second mirror, the mirrors being arranged to transmit an image from the support onto an eyepiece in front of which the user can position a first... | 11/02/2004 |
| 5718053 | Stationary perspective device An artist's drawing device for maintaining a constant three-dimensional perspective while rendering a subject or object. The drawing device includes a first visually-defined perimeter of a planar geometric figure having a first size, a second visually-def... | 02/17/1998 |
| 4672749 | Mechanical perspective drafting device Mechanical perspective drafting device, characterized by a first drafting board which is fitted with a second drafting board with a fixed support which includes a universal joint through which a long member can slide and rotate freely, the long member bei... | 06/16/1987 |
| 4493152 | Lettering machine A lettering machine is disclosed, which comprises a tracer support mechanism supporting a tracer at a corner such that the tracer can be freely moved to trace a letter or the like engraved on a tracing plate, a parallelogrammic horizontal component transm... | 01/15/1985 |
| 4432140 | Device for copying panoramic images A device for copying panoramic images includes a screen provided with structure for inclining and fixing the screen. There are defined two like, adjacent sectors successive in height, one of which is transparent and through which the panoramic image to be... | 02/21/1984 |
| 3988833 | Tracing scope A device for use by an artist in order to trace an actual scene or three dimensional object upon a transparent film or sheet; the device consisting of a frame having a pivotable easel leg so that the frame may stand upright, a transparent stiff plastic ba... | 11/02/1976 |
