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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 = '292') AND (category.subclass = '307R') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '292'; Subclass is '307R';

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T / S Patent Date Description Patentee Category Assigned To
 1910
U 950,181 February 22, 1910 Lightning Rod Support
Lightning rod tripod support		 MAHER, Jeremiah J.
 Lightning Rod  

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