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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 = '57') AND (category.subclass = '59') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '57'; Subclass is '59';

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T / S Patent Date Description Patentee Category Assigned To
U 156,713 November 10, 1874 Improvement in Machines for Making Tubular Lightning Rods
Machine for making lightning rods by make metal tubes from sheet metal and wrapping the tubes around a central core
Lightning Rod Machine  

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