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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 = '1') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '432'; Subclass is '1';

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T / S Patent Date Description Patentee Category Assigned To
 1923
U 1,468,947 September 25, 1923 Furnace for Decorating Ceramic Ware
Kiln for firing porcelain spark plug insulators		 JEFFERY, Joseph A.
 Manufacturing Jeffery-Dewitt Co.

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