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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 = '726.1') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '52'; Subclass is '726.1';

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T / S Patent Date Description Patentee Category Assigned To
U 173,963 February 22, 1876 Improvement in Lightning Rods
Lightning rod with solid supporting rod fitted inside and screwed into the rod coupling on each end
PRICE, David A.
Lightning Rod Reyburn, Hunter & Co.
U 1,047,176 December 17, 1912 Cross Arm
Crossarm stamped out of sheet metal and easy to install
CRABTREE, Lawrence L.
RIPLEY, T. Charley

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