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 |
| 6969605 | Miniature immuno-optical rapid analyte sensor platform A hand held, self-contained, automatic, low power and rapid sensor platform for detecting and quantifying a plurality of analytes. A sample solution potentially containing an unknown amount of an analyte is passed through an affinity column which contains antibodies... | 11/29/2005 |
| 6577134 | Sensor and sensor system for liquid conductivity, temperature and depth Liquid conductivity and temperature are measured in respective sensitivity fields that are collocated--i. e., in volumes that nearly match by mathematical, geometrical, or functional criteria. Collocation is as distinct from mere adjacency or proximity; a... | 06/10/2003 |
| 6404204 | Sensor and sensor system for liquid conductivity, temperature and depth Liquid conductivity and temperature are measured in respective sensitivity fields that are collocated--i. e., in volumes that nearly match by mathematical, geometrical, or functional criteria. Collocation is as distinct from mere adjacency or proximity; a... | 06/11/2002 |
| 6261848 | Miniature immuno-optical rapid analyte sensor platform A hand held, self-contained, automatic, low power and rapid sensor platform for detecting and quantifying a plurality of analytes. A sample solution potentially containing an unknown amount of an analyte is passed through an affinity column which contains... | 07/17/2001 |
| 4408169 | Frequency encoding closed loop circuit with transducer A frequency encoding closed loop circuit with transducer, comprising a closed inner digital loop nested in a closed outer loop which carries both digital and analog signals, associates a corresponding frequency output to variations in the magnitude of phy... | 10/04/1983 |