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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 = '432') AND (category.subclass = '189') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '432'; Subclass is '189';

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T / S Patent Date Description Patentee Category Assigned To
 1853
U 9,789 June 14, 1853 Manufacturing Glass
Glass furnace for burning coal		 BROOKFIELD, James M.
WHITE, Ephraim V.
 Furnace  
 1869
U 88,066 March 23, 1869 Improved Glass Furnace
Improved glass furnace with blower to remove fumes and improve the draught		 OAKMAN, Samuel
 Furnace  

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