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 |
| 4953085 | System for the operation of a financial account A personal financial management program is disclosed incorporating means of implementing, coordinating, supervising, analyzing and reporting upon investments in an array of asset accounts and credit facilities within a client account. Through a mathematic... | 08/28/1990 |