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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 |
| 7048029 | Sectional door A sectional door having a door frame, a door panel comprising sections coupled to another in articulated manner, a weight equalization device coupled to the door panel, and an electrical door drive for opening and closing movements of said door panel. The uppermost ... | 05/23/2006 |
| 6412420 | Cable by-pass device and system Disclosed herein is cable by-pass device comprising a guide wheel rotatably mounted to an axle, at least one toothed wheel having a plurality of teeth extending radially therefrom rotatably mounted independently of the guide wheel, a bracket to the rear o... | 07/02/2002 |
| 5054987 | Load transfer device A load transfer device for loading or unloading an entire storage compartment, such as the interior of a freight hauling trailer, in one cycle includes a long vertically flexible load support and transfer member that is as long and as wide as the storage ... | 10/08/1991 |
| 4641583 | Free rotation sprocket, drag chain conveyor system A power and free conveyor system wherein a plurality of conveyor units or trolleys in the form of part suspension frames and the like may be moved by a continuously moving chain but the relationship of the chain to each conveyor is such that no latching o... | 02/10/1987 |
| 4599032 | Rolling base for truck cranes A rolling base assembly for truck cranes which allows movement of the truck crane under load-carrying conditions. The device comprises a fixed chain installed along the centerline of a flatbed trailer. A rolling base, having outboard roller housing assemb... | 07/08/1986 |
| 4187784 | Self propelled cable car A cable car for traveling along an overhead cable-way, the car having an on-board engine that powers the vehicle to haul itself along the cable-way, the engine rotating a winch drum around which is frictionally grasped a stationary hawling cable which at ... | 02/12/1980 |
| 4120411 | Portable battery cart A portable battery cart is disclosed for transporting electrical batteries including a wheeled base frame and an elevator platform carried by the base frame. A jack lift is provided for moving the elevator platform vertically relative to the base frame. A... | 10/17/1978 |
| 4018306 | Emergency building access apparatus An emergency building access apparatus permitting ready access to a multi-story building on fire and rapid evacuation of occupants from a choice of multiple of emergency exits on each floor by a safe and dependable means is a multiple of vertical railroad... | 04/19/1977 |
