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 |
| 6803906 | Passive touch system and method of detecting user input A passive touch system includes a passive touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and have overlapping fields of view. A processor receives and pr... | 10/12/2004 |
| 6747636 | Projection display and system with pressure sensing at screen, and computer assisted alignment implemented by applying pressure at displayed calibration marks An interactive display system comprising a touch sensitive display surface for sensing pressure applied thereto and in response generating control signals indicating locations of the applied pressure, a personal computer for receiving the control signals and in resp... | 06/08/2004 |
| 6741267 | Keyboard for an electronic writeboard and method An electronic writeboard for communicating with a computer including applications software and running an active application comprises a touch sensitive panel on which the screen image output of the computer is displayed. The touch sensitive panel is responsive to u... | 05/25/2004 |
| 6540366 | Overhead projection system An overhead projection system includes an overhead projector support assembly extending outwardly from a generally vertical support surface in a generally horizontal disposition. A display screen having a display surface is mounted on the support surface ... | 04/01/2003 |
| 6337681 | Projection display system with pressure sensing at screen, and computer assisted alignment implemented by applying pressure at displayed calibration marks An interactive display system comprising a touch sensitive display surface for sensing pressure applied thereto and in response generating control signals indicating locations of the applied pressure, a personal computer for receiving the control signals ... | 01/08/2002 |
| 6326954 | Method for erasing on an electronic writeboard A method for erasing writing on an electronic writeboard includes the steps of describing an eraser as a mask and monitoring movement of the eraser over the electronic writeboard. When the mask overlaps with writing on the electronic writeboard, erasing o... | 12/04/2001 |
| 6320597 | Method for editing objects representing writing on an electronic writeboard A method for editing objects representing writing on an electronic writeboard comprises the steps of: creating an object representing writing on the electronic writeboard; determining if the created object overlies an existing object by at least a thresho... | 11/20/2001 |
| 5448263 | Interactive display system An interactive display system comprising a touch sensitive display surface for sensing pressure applied thereto and in response generating control signals indicating locations of the applied pressure, a personal computer for receiving the control signals ... | 09/05/1995 |