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 |
| 4648590 | Transport device for paper sheets A transport device for paper sheets incorporates driven rollers which frictionally engage the paper sheets and are mounted on shafts arranged parallel with one another in the transport direction. Filaments extending in the transport direction are utilized... | 03/10/1987 |