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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 = '174') AND (category.subclass = '28') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '174'; Subclass is '28';

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T / S Patent Date Description Patentee Category Assigned To
 1873
U 145,851 December 23, 1873 Improvement in Lightning Rods
Lightning rod made of tubular metal with annular corregations on each end that fitted together to connect two rod sections		 DREW, Joseph
 Lightning Rod  

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