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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 = '428') AND (category.subclass = '34.1') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '428'; Subclass is '34.1';

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T / S Patent Date Description Patentee Category Assigned To
 1866
U 52,541 February 13, 1866 Improvement in Lightning Rods
Lightning rod with four ribs where halves with two ribs slide together to make any desired length		 CUSHMAN, S. D.
 Lightning Rod  

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