|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|
|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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