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Title: Copy of German patent Specification No [Go to resource]
Description: Copy of German patent Specification No. 30105 relating to the invention of the perforated scanning disc by Herr. P Nipkow in 1884 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1937-819 Go to resource More Like this...
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