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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Rough') ORDER BY date ASC, patent, type

Total of 1 patents found where: Category is 'Rough';

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T / S Patent Date Description Patentee Category Assigned To
 1872
U 129,724 July 23, 1872 Improvement in Insulators for Telegraphic Uses
Roughened lower surface of insulator to retain patented coating mixture		 FARMER, Moses G.
 Rough  

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