|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 = '591') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '222'; Subclass is '591';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||808,810||January 2, 1906||Glass Furnace
Furnace for discharging glass to make insulators
|BROOKFIELD, Henry M.
Total of 0.00 seconds