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 |
| 8220207 | Roof structure for a grain bin A roof for a large diameter grain bin is formed by roof rafters inclined from a top of the wall to a top ring, with sheet metal panels in an upper row extending from the ring to a circular bottom edge and a lower row extending from a circular top edge to the wall. A... | 07/17/2012 |
| 4864900 | Testing and adjusting tool for air brake cams Conventionally, air brake cam clearance is difficult to check due to inaccessibility and the force necessary to rotate the cam to check for the required clearance. The present device engages around the end of the cam lever both front and back and gives su... | 09/12/1989 |