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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 = '52') AND (category.subclass = '739.1') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '52'; Subclass is '739.1';

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T / S Patent Date Description Patentee Category Assigned To
 1912
U 1,029,207 June 11, 1912 Insulator Support
Crossarm composed of reinforced concrete		 MEGAHAN, Oliver P.
 Crossarm  

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