Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7180428 | Compact radar vehicle speed monitor A display indicates speed in GREEN when the approaching vehicle is traveling below or equal to the user set compliance speed. The primary display flashes RED when the approaching vehicle is exceeding the preset compliance speed. A rear mounted control panel and LCD ... | 02/20/2007 |