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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 = '248') AND (category.subclass = '62') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '248'; Subclass is '62';

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T / S Patent Date Description Patentee Category Assigned To
 1869
U 92,299 July 6, 1869 Improvement in Telegraph Insulators
Clamp type insulator and bracket		 FRY, John W.
 Clamp Type  

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