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Penn Jillette of Penn and Teller fame has patented a "Hydro-Therapeutic Stimulator", which uses a hot tub for stimulation.
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| Number | Title | Issue Date |
| 7187244 | Digital light ballast oscillator An oscillator for a power converter control outputs a pulse train based on a charging time of a capacitor linked to a variable current source. A digital to analog converter (DAC) controls the variable current source in conjunction with a switch to determine the char... | 03/06/2007 |
| 5821643 | Synchronization control scheme for a plurality of switching circuits, method of operation therefor and battery plant employing the same A synchronization control scheme that provides a drive signal to a plurality of switching circuits and method of operation therefor. The synchronization controller, includes: (1) a plurality of dual threshold relaxation oscillators, coupled to a correspon... | 10/13/1998 |
| 5646463 | Synchronization control for interrelated DC voltage/battery polarity switching circuits A plurality of battery/voltage polarity switching circuits are constrained to operate in switching synchronism by a timing circuit associated with each polarity switching circuit that are interrelated to one another such that only the fastest response tim... | 07/08/1997 |
| 4536723 | High-power pulse generator using transmission line with spark discharge device A high-frequency, high-power generator of the type in which energy is stored in the capacitance of a transmission line and then discharged into a load by the action of a spark discharge device. The load is connected between one end of a transmission line ... | 08/20/1985 |
