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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 = '414') AND (category.subclass = '190') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '414'; Subclass is '190';

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T / S Patent Date Description Patentee Category Assigned To
 1906
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.
 Mixer  

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