"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
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| Number | Title | Issue Date |
| 5898945 | Ear muff An improved ear muff that is snappably engageable with the ear of the wearer. It includes an outer cover and an inner snappable annular actuating element form-fitted within said outer cover, the inner annular actuating element comprising a semi oval gener... | 05/04/1999 |