|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 = '198') AND (category.subclass = '661') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '198'; Subclass is '661';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||826,139||July 17, 1906||Device for Mixing Ingredients for Making Glass and for Feeding them to Furnaces
Mixer for mixing ingredients for glass insulators
|BROOKFIELD, Henry M.
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