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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 = '24') AND (category.subclass = '569') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '24'; Subclass is '569';

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T / S Patent Date Description Patentee Category Assigned To
 1897
U 583,692 June 1, 1897 Insulator
Clamp type with lag screw		 RENAULT, Edward
 Clamp Type  

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