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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 = '188.9') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '248'; Subclass is '188.9';

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T / S Patent Date Description Patentee Category Assigned To
 1930
U 1,786,458 December 30, 1930 Insulating Nontilting Stool
Insulated stool composed of multiple plies of hardwood with extended legs. Pintype insulators are used to support the legs and insulate the stool.		 SHIPMAN, Emanuel F.
 Stool  

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