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 |
| 4464131 | Water ballast compartment for buoyant marine devices An improvement in buoyant marine devices, such as pyrotechnic markers, the displacement of which normally decreases during operation as a result of weight loss. The device is provided with a ballast means and means to enable the ballast compartment to fil... | 08/07/1984 |
| 4145987 | Flare buoy A flare buoy for burning off excess hydrocarbon gas during the offshore production or processing of hydrocarbons, comprises a submerged buoyant body that extends upwardly past the water in a portion of reduced cross-sectional area and terminates upwardly ... | 03/27/1979 |