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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 = '222') AND (category.subclass = '600') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '222'; Subclass is '600';

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T / S Patent Date Description Patentee Category Assigned To
 1906
U 808,810 January 2, 1906 Glass Furnace
Furnace for discharging glass to make insulators		 BROOKFIELD, Henry M.
 Furnace  

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