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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 = '72') AND (category.subclass = '316') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '72'; Subclass is '316';

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T / S Patent Date Description Patentee Category Assigned To
 1878
U 202,578 April 16, 1878 Improvement in Machines for Making Lightning Rods
Portable machine to make lightning rods mounted in a wagon		 PATEE, Theodorus H.
 Lightning Rod Machine  

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