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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 |
| 6946594 | Method for reproducing the sound of an accordion electronically Method for electronically reproducing the sound of an acoustic accordion, that is provided with a number of keys/buttons, which can be pressed individually so as to excite a corresponding number of reeds that are coupled with every single key/button; for electronica... | 09/20/2005 |
| 4383463 | Musical bellows instrument provided with an electro-pneumatic control device operated by the bellows movement Musical bellows instrument comprising an electro-pneumatic switching device, operated by the change in air pressure generated by the bellows movement to control a set of control gates for the registers, sets of registers or effect circuits of the musical ... | 05/17/1983 |
