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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 |
| 4099536 | Method and apparatus for controlling a surging flow in a closed conduit An apparatus and method for controlling a surging flow in a closed conduit is characterized by a moveable flow restrictor element disposed within the closed conduit and responsive to a control signal to restrict the fluid flow therewithin to a damped flow... | 07/11/1978 |
| 4000645 | Apparatus for pneumatically monitoring conditions of a well circulating system Pneumatic apparatus for monitoring conditions of the drilling fluid circulating system of a well being drilled. A pneumatic signal having unequal duration times and representative of the rate of movement of the circulating pump is transmitted through a re... | 01/04/1977 |
| 3994166 | Apparatus for eliminating differential pressure surges An apparatus for use with a borehole monitoring system which senses downhole well conditions in a wellbore having a pump and a mud flow line characterized by short term pressure fluctuations for circulating drilling mud down the well. The apparatus includ... | 11/30/1976 |
| 3994176 | Pneumatic apparatus for measuring rate of movement A pneumatic apparatus for measuring the rate of movement of one object with respect to another. A pneumatic signal functionally related to the displacement of the object whose rate is being measured is generated, differentiated and recorded. The apparatus... | 11/30/1976 |
