![]() ![]() He applied to the imperial patent office in Berlin for a patent covering an electric telescope for the electric reproduction of illuminating objects, in the category "electric apparatuses". In 1883, while still a student he conceived the idea of using a spiral-perforated disk to divide a picture into a mosaic of points and lines. Paul Gottlieb Nipkow, a German engineer who invented the scanning disk in 1884 took television development to the next stage. ![]() However, Leblanc was not able to construct a practical working machine.
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