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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '256') AND (category.subclass = '53') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '256'; Subclass is '53';

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T / S Patent Date Description Patentee Category Assigned To
 1882
U 258,061 May 16, 1882 Screw for Fastening Telegraph Wires
Metal screw with self-tying end for holding a telegraph wire.		 HAVILAND, Andrew J.
 Screw  

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