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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '425') AND (category.subclass = '422') ORDER BY last_name ASC, first_name, date, patent, type

Total of 3 patents found where: Class is '425'; Subclass is '422';

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T / S Patent Date Description Patentee Category Assigned To
 BOCH, John W.
U 648,341 April 24, 1900 Die for Pottery Ware
Die for pressing out door knobs		 BOCH, John W.
 Die  
 FISCHER, Eugene H.
U 2,301,939 November 17, 1942 Production of Ceramic Bodies
Press to make a very dense porcelain body. It is neither wet process nor dry process porcelain. The product was called ""Prestite"" porcelain.		 FISCHER, Eugene H.
 Press Westinghouse Electric & Mfg. Co.
 KENNEY, Benjamin D.
U 899,871 September 29, 1908 Mantle Ring Mold
A mold for making mantle rings.		 KENNEY, Benjamin D.
 Mold The R. Thomas & Sons Co.

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