Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 5845583 | Dual-mode transporation system and power unit The invention comprises a replaceable power unit and transportation system for a dual-mode vehicle, such as an electric car which can operate on built-in batteries and by way of power supplied by a running rail. The vehicle moreover comprises road wheels ... | 12/08/1998 |
| 5845581 | Monorail system A monorail system for passenger and light freight transportation provides a support structure with an essentially planar top surface and a stabilizer guide rail having a vertical web portion supporting an upwardly outwardly extending head. The head guides... | 12/08/1998 |
| 4635559 | Pipeline monorail system A pipeline monorail comprising a pipeline provided with at least one outwardly extending flange extending the length of the pipeline; two carriages, longitudinally spaced on the pipeline, each carriage having wheels operable to frictionally engage the fla... | 01/13/1987 |
| 4603638 | Train system with variably tilting rail A train system includes (a) a train car, (b) a support for the car adapted to be guided along a rail having variable angular tilt along its length and relative to horizontal, whereby the support assumes the tilt of the rail, and (c) a gimbal coupled between th... | 08/05/1986 |
| 4573413 | Monorail transport system The transport system comprises a rail and an undercarriage provided with two running wheels arranged in the longitudinal axis of the undercarriage. The running wheels have curved travel or bearing surfaces which rest upon a complementary curved supporting... | 03/04/1986 |
| 4491073 | Train system with variably tilting rail A train system includes (a) a train car, (b) a support for the car adapted to be guided along a rail having variable angular tilt along its length and relative to horizontal, whereby the support assumes the tilt of the rail, and (c) a gimbal coupled between th... | 01/01/1985 |
| 4382412 | Dual drive traction system An auxiliary drive traction system for an automated guideway transit (AGT) vehicle. Remotely controlled hydraulic or electrically powered auxiliary drive systems are used to drive the AGT vehicle's lateral guide wheels, which are biased against a running ... | 05/10/1983 |
| 4353308 | Cog wheel railway Cog wheel vehicle system. A single track consists of a square beam having a pair of flanges. There is a row of holes in each flange. A vehicle rides on the track and has a cog wheel engaging the holes in the flange. A directional hydraulic motor is connec... | 10/12/1982 |
| 4304187 | Monorail system A monorail system having a rail surface that is provided for small vehicles traversing an incline or slippery areas, with the surface having a plurality of spaced recesses positioned in those areas to form gripping edges for the drive wheels of the vehicl... | 12/08/1981 |
| 4237790 | Monorail rapid transit system A monorail rapid transit system including a plurality of cars coupled together to form a train and supported for travel on a main track comprising a pair of upstanding rails arranged in spaced-apart parallel relationship and including an auxiliary track d... | 12/09/1980 |
| 4236454 | Mountain monorail slide A guideway gravity vehicle combination designed for recreational use on hills and mountains consisting of a wheeled, stabilized vehicle riding on a monorail which extends from the top to the bottom of a downwardly inclined slope. The rider controls the ve... | 12/02/1980 |
| 4221170 | Monorail mountain slide A monorail mountain coaster for recreational transportation along an inclined path on a hill or mountain comprising a channel disposed on and spaced from the path, a chassis frame moveable along the channel, a coaster shell resiliently mounted on the chas... | 09/09/1980 |
| 4217727 | Miniature monorail system A toy monorail system of the support type for vehicles such as miniature railway cars and slot cars. The monorail track consists of an elongated flat strip or length of plastic having flat metal conductors located in flanged recesses molded into each side... | 08/19/1980 |
| 4201137 | Sled and slide construction A slide and sled combination designed for use on the side of a mountain in conjunction with the operation of ski lift, consists of a monorail extending the length of a mountain from the upper end near the top of a ski lift along a path containing curves, ... | 05/06/1980 |
| 4175224 | Apparatus for transporting heavy equipment on a pipeline Apparatus is disclosed for transporting heavy equipment such as welding current generators, a prime mover therefor, and associated devices or supplies, on and along a pipeline, the pipeline serving as a monorail. The apparatus, of elongated construction a... | 11/20/1979 |
| 3999488 | Gripping drivers locomotive Haulage equipment for hauling a mining machine or vehicle along a stationary elongated rail assembly having a generally wedge shaped cross-sectional area comprising a body rotatably supporting two pairs of drivably interconnected rollers, the axes of the ... | 12/28/1976 |