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"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
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| Number | Title | Issue Date |
| 5073750 | Remote control apparatus for installation of electrical toy and circuit A remote control device for an installation of electrical toys on a circuit comprises a radio emitter (400) for emitting different radio-electric signals (b) selected by the user and a fixed radio receiver (450) for detecting and transmiting the radio-ele... | 12/17/1991 |
