The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
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| Number | Title | Issue Date |
| 7162337 | Automatic neutral section control system A method of controlling a neutral section operation of a train (14) including a lead locomotive (16) and at least one remote locomotive (12) in communication with the lead locomotive. The locomotives are electrically powered from respective elec... | 01/09/2007 |
| 7142957 | Journey event sequencing for automated driverless vehicles An improved system for supplying electric power to and automatically controlling the speed of driverless electrically motivated wheeled vehicles on a guideway utilizing a plurality of guideway disposed power busses, each supplied by a sequentially variable frequency... | 11/28/2006 |
| 7143017 | Remote control locomotive simulator A remote control locomotive simulator including a display and a first input device similar to a remote control locomotive controller to be operated by the operator to provide train signals. A computer drives the display to move a train relative to a track in respons... | 11/28/2006 |
| 6978873 | Connection structure of induction line cover An induction line cover includes a cylinder-shaped section into which an induction line can be fitted, plate-shaped sections continuously connected outwardly from a pair of ends created by cutting a slit longitudinally in the cylinder-shaped section at a circumferen... | 12/27/2005 |
| 6975084 | Power window controller A controller has a plurality of control units that are mutually connected by a communication line and are set at different places of an automobile, each corresponding to a different one of its power windows and serving to control its opening and closing. One of thes... | 12/13/2005 |
| 6533224 | Power and impedance control methods for model railroads Methods are provided for intelligent power management control of model railroad layouts that employ multiple boosters that can be added in a parallel arrangement to increase the power available to a section of track. Boosters paralleled in this method emp... | 03/18/2003 |
| 4733616 | Track-bound selfpropelled car conveyor My conveyor comprises an associated track-bound car including a drive motor supplied with drive current by current-carrying rails, a container, and a cover for the conveyor, as well as a track on which the conveyor runs by a plurality of stations. In orde... | 03/29/1988 |
| 4471231 | Alternating current feeder system for trolley-assisted dump trucks An alternating current feeder system for use in trolley assisted dump trucks has a feeder circuit of a.c. system including a Scott connection transformer used as a main substation, main- and T-winding sections having a phase difference of 90 degrees on th... | 09/11/1984 |
| 4301899 | System for automatically controlling an electrically propelled traction vehicle traversing a gap in wayside source of power A plurality of stationary markers (A, B, C, and D) are symmetrically placed at predetermined locations in the right of way of an electrically propelled traction vehicle on opposite sides of a transition point coinciding with a gap (14) between adjacent se... | 11/24/1981 |