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 |
| 4124222 | Treadle scooter A novel structure in a scooter type sport vehicle is presented. The vehicle is of the type which includes a supporting frame structure in combination with at least front and back wheels mounted for rotation with respect to said frame to define a wheeled v... | 11/07/1978 |
| 4123930 | Mandrel for bending tubes A flexible mandrel for use in bending tubes and especially for producing tight bends in thin wall, high strength metal tubing. The mandrel comprises a series of ball members each of which is adapted to nest within the preceding ball of the series as the m... | 11/07/1978 |
| 4081145 | Food cutting machine A food-cutting machine for slicing, grating or shredding foodstuffs such as fruits, vegetables, meats or cheeses. The device is designed particularly for home kitchen use and features a hollow body or housing, the interior of which is adapted to storage o... | 03/28/1978 |
| 4039928 | Electrical operating circuit having semiconductor device junction temperature monitoring An operating circuit for a semiconductor switch device of the type that passes electrical current from a source to an electrical load by forward biasing of the semiconductor's control terminal includes a resistance bridge network having in an arm thereof ... | 08/02/1977 |
| 3934875 | Hockey stick A hockey stick is formed of a fiber-reinforced plastic blade integrally molded onto a tapered metal shank which mates with a rectangular tubular metal shaft or handle to form a four-plane lap joint which is bonded with a thermoplastic adhesive. The metal ... | 01/27/1976 |