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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 |
| 7900879 | Switch points maneuvering device with manual control A device is provided for manually maneuvering a set of switch points, the device includes a housing which is intended to apply a force at a location of a set of rail switch points in order to move the set of switch points relative to the housing from a first switch ... | 03/08/2011 |
| 5527005 | Swing nose frog switch point adjuster An apparatus is provided for moving a movable switch point a selected distance as a result of the throw of a switch machine. The apparatus includes an operating rod connected to and movable by the switch machine and a switch point adjuster mounted directl... | 06/18/1996 |
| 4637579 | Railroad switch mechanism A railroad switch mechanism wherein the switch points of a track switch are moved between normal and release positions by a switch machine connected to the switch points by throw rod, lock rod and detector rod assemblies which are adjusted to have predete... | 01/20/1987 |
