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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 |
| 7277114 | Image recording apparatus and method A photographic printer is loaded with two webs of photographic paper, and produces photographic prints by exposure thereto. Initially, the photographic paper is advanced from two photographic paper rolls in parallel. Those two are combined together to constitute a p... | 10/02/2007 |
| 7079229 | Densitometry device The present invention relates to a densitometry device that can perform suitable densitometry with minimum required light amounts and can achieve space savings. An angle θ between a reference optical axis of a light source, which is an LED chip, and an optical axis... | 07/18/2006 |
