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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 |
| 7363719 | Pocket level A pocket level having a detachable line level whose bubble vial doubles as the pocket level's horizontal bubble vial, and an angle finder for enabling the determination of the angle of an inclined surface which includes a bubble vial housed in a wheel rim directly r... | 04/29/2008 |
| 7281335 | Carpenter's level A level assembly includes a main level with a base wall, end supports at opposite ends of the base wall and at least one intermediate support extending from the base wall at a location between the end supports. Bubble tubes may be mounted in the end supports and/or ... | 10/16/2007 |
| 7047654 | Retainer clips for securing a cylindrical level vial Hand tool (1) including a pair of retainer clips (7A,7B) for securing a cylindrical level vial (6) in a suitable recess (3), and method of assembly therefor. ... | 05/23/2006 |
| 6954990 | Angle measuring device A measuring device is provided for carpenters, roofers and other tradesmen. The device is made of relatively lightweight plastic and has a variety of uses. The elongated base is rectangular in cross sectional and includes a scale for measuring distances along one si... | 10/18/2005 |
| 6918187 | Multi plane plumb level A multi plane plumb level includes an elongated rigid frame having an X shaped cross section having four walls that are rigidly joined along an elongated central portion of the X shaped cross section and extend outward from the elongated central portion of the X sha... | 07/19/2005 |
| 6098298 | Level A new level for determining whether surfaces are level and plumb. The inventive device includes an elongate main member and a elongate insertion member. The main member has first and second ends, and top and bottom faces. The top face of the main member h... | 08/08/2000 |
| 5881468 | Spirit level A spirit level with a pair of elongate arms which are pivotable relative to each other about a pivot axis and which have a measuring device, for being placed on a plane and for detecting an inclination thereof, wherein each of the arms has a first and a s... | 03/16/1999 |
| 4934706 | Combination lie and shaft position indicator A golf training aide is attached to a golf club shaft and visually indicates to the golfer when the club shaft is held in a vertical plane and when the club head is held in proper angular relation to the ground. An indication of vertical alignment of the ... | 06/19/1990 |
| 4590682 | Compact level A level containing horizontal, vertical and rotatable bubble capsules is constructed using only two different housing parts. The main housing is comprised of two identical halves secured back to back. A cylindrical chamber which houses the rotatable bubbl... | 05/27/1986 |
| 4542592 | Wheeled vehicle leveling device and method A wheeled vehicle level has adjustable longitudinal and lateral level indicators, with the lateral level indicator further pivotable in response to a cam ring of a rotatable cap. The cap has numbers to indicate the amount by which a wheel should be raised... | 09/24/1985 |
| 4096637 | Orienting device for dental facebow or pantograph An orienting device for a dental facebow which consists of a first gauge and a second gauge which are arranged for pivotal movement with respect to the facebow in planes which are perpendicular to one another. The gauges are of the bubble gauge type, and ... | 06/27/1978 |
