|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 = '402') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '427'; Subclass is '402';
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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.
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