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 |
| 4632165 | Method and apparatus for milling and grooving wooden framing members esp. halving joints A method and an apparatus are disclosed for cutting pairs of symmetrical bevels on opposite sides of halving joints used for windows, doors, and the like, and a groove-like recess on a third side of the workpiece. The first pair of bevels is cut on one si... | 12/30/1986 |
| 4450881 | Roller table for woodworking machines This invention relates to a roller table for woodworking machines, especially for tenoning and slot mortising machines for the manufacture of window frames, which can be moved in translation along a straight guideway and which is provided, at the end faci... | 05/29/1984 |