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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 |
| 5714847 | Power regulator A power regulator system provides power to an electrical load. A power level selector generates a reference signal which indicates a desired power level for the electrical load, and a control circuit connected with a AC power source interrupts flow of the... | 02/03/1998 |
| 5018058 | High frequency AC voltage control This voltage control apparatus produces distortionless, stabilized alternating output voltage subject to distortion. The apparatus comprises a wave form reshaping circuit connected to the voltage output for energizing a load, and an internal reference vol... | 05/21/1991 |
