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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| Application No. | Application Title | Issue Date |
| 20060219649 | Portable support method and apparatus A portable manway cover handling apparatus and method comprises a lightweight support unit having a mounting tab secured to a manway stub flange within stub flange bolt holes by stud bolts projecting from expandable mandrel sleeves. A structural support beam is cantilev... | 10/05/2006 |