. . "De Forest, Lee"@en . "American inventor" . "1961Z"^^ . . . "Lee de Forest (August 26, 1873 \u2013 June 30, 1961) was an American inventor, self-described \"Father of Radio\", and a pioneer in the development of sound-on-film recording used for motion pictures. He had over 180 patents, but also a tumultuous career \u2014 he boasted that he made, then lost, four fortunes. He was also involved in several major patent lawsuits, spent a substantial part of his income on legal bills, and was even tried (and acquitted) for mail fraud."@en . "1961-06-30Z"^^ . . "Lee de Forest"@en . "1873-08-26Z"^^ . . . . . . "1873Z"^^ . . . . . .