|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 = '501') AND (category.subclass = '32') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '501'; Subclass is '32';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,136,504||April 20, 1915||Glass and Art of Making the Same
Glass made from cullet with lime and clay added
|BROOKFIELD, Henry M.
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