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Infographic – This week in patents – November 23-27
Infographic - This week in patents - November 23-27
November 25, 2015
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This Day in Patent History – On November 25, 1975, Robert S. Ledley was granted a patent for “diagnostic X-ray systems” known as the CAT-Scan
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This Day in Patent History – On November 26, 1895, Russell Penniman received a patent for a transparent photographic film
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