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 |
| 5684117 | Flame retardant polyketone polymer blend The Comparative Tracking Index of a flame retardant polyketone blend of polyketone polymer and glass filler is improved by formulating the flame retardant as a mixture of alkaline earth metal hydroxide or carbonate and zinc compound.... | 11/04/1997 |
| 5486594 | Polyketone polymers as nylon toughners It is disclosed a toughened polyamide comprising a polyamide, such as Nylon 6, and a minor amount of a linear alternating polymer of carbon monoxide and at least one or more ethylenically unsaturated hydrocarbon. The toughened polyamide has and exhibits i... | 01/23/1996 |