Quotables
"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 6441570 | Controller for a model toy train set The present invention provides a controller for a model toy train set. In a first aspect of the invention, the controller includes a plurality of input connectors for receiving supply power from one or more remote power supplies and providing such power t... | 08/27/2002 |
| 6005475 | Communication method and apparatus for conveyor carriages A communication system for a plurality of carriages that travel along a rail. A power cable extends along the rail. The cable is used to convey electric current that drives the movable bodies and is also used to carry information between the carriages. Th... | 12/21/1999 |
