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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 = '249') AND (category.subclass = '142') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '249'; Subclass is '142';

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T / S Patent Date Description Patentee Category Assigned To
 1930
U 1,754,101 April 8, 1930 Insulator and Mold for Casting the Same
Hewlett style insulator made by casting		 HAQUIN, Henri Louis Joseph
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