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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 |
| 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 |
| 4229111 | Feed mechanism for marking machine A marking machine for marking metal nameplates, tags or the like. The marking machine employs a work table supported on a carriage which is movable into contact with a marking wheel to perform a printing operation. Improved advancing means are provided fo... | 10/21/1980 |
