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 |
| 4712934 | Typewriter carriage escapement mechanism having two sets of teeth A typewriter carriage escapement mechanism comprises a rack (10) movable with the typewriter carriage (2) and having two sets of teeth (16 and 18) projecting in opposite directions. An escapement dog (30) has two separate teeth or sets of teeth (44 and 54... | 12/15/1987 |
| 4512675 | Serial printer A serial printer suitable for use in desk-top calculators or the like. The serial printer has a rotary shaft rotatable together with two type wheels. The power supply to the rotary shaft is made by a motor which operates continuously only in one rotationa... | 04/23/1985 |
| 4462709 | Type carrier return and platen line space device for typewriters A carriage return device in a typewriter including: an interposer operable through operation of a key lever for the carriage return; a cycle bail driven by the interposer; a driving source adapted to rotate a main shaft by a predetermined number of rotati... | 07/31/1984 |
| 4344714 | Device for positioning the beginning of a line in a typewriter A device for positioning the beginning of the line in a typewriting machine of the kind with a typing element carried by a carriage (1) includes at least one margin stop (13) for the carriage (1). This margin stop (13) is fixed on a mounted margin rack (1... | 08/17/1982 |
| 3978967 | Typewriter tabulator The tabulator blade rack consists of a pivotally and axially movable rod. Depressing the desired decimal tabulation key frees the carriage from the escapement for movement in the typing direction, raises the corresponding tabulator stop, and rotates the t... | 09/07/1976 |