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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 = '427') AND (category.subclass = '443.2') ORDER BY category ASC, date, patent, type

Total of 2 patents found where: Class is '427'; Subclass is '443.2';

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T / S Patent Date Description Patentee Category Assigned To
U 6,907 November 27, 1849 Improvement in Glazing Pottery-Ware
Transparent and colored glaze for pottery and stone ware
FENTON, Christopher W.
 Glass Coating
U 3,093,508 June 11, 1963 Method of Coating Glass
Silicone coated glass that can be used for insulators
Glass Coating  

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