|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|
|U||1,029,207||June 11, 1912||Insulator Support
Crossarm composed of reinforced concrete
|MEGAHAN, Oliver P.
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