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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 |
| 6907677 | Stable LVDT extensometer A new extensometer is disclosed that avoids prior art problems of drift and other problems from variations in temperature, humidity and other environmental factors. Two primary extensometer body parts each hold at one end specimen contact rods and at their other end... | 06/21/2005 |
| 5600895 | Extensometer An extensometer measures strain on a test specimen subjected to tensile, compression or fatigue tests. The extensometer has a pair of members that are connected together preferably with at least two spaced-apart flexible plates. The members are coupled to... | 02/11/1997 |
| 5123175 | Horizontal extensometer Disclosed is a horizontal extensometer for measuring strain on specimens in cryogenic to elevated temperatures with zero frictional and activation forces. The extensometer has first and second elongate hollow arms which are adapted to pivot in relation to... | 06/23/1992 |
| 4939445 | Pivoted arm capacitive extensometer A capacitive extensometer has an extensometer frame formed of a pair of arms having first ends with specimen contacting members and which are connected together about a hinge axis at second remote ends. The specimen contacting members engage the surfaces ... | 07/03/1990 |
