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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 = '65') AND (category.subclass = '231') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '65'; Subclass is '231';

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T / S Patent Date Description Patentee Category Assigned To
 1903
U 736,708 August 18, 1903 Machine for Producing Glass Bottles
Press for pressing glass bottles		 DUFFIELD, Thomas C.
 Press  
 1906
U 820,403 May 15, 1906 Bottle Mold
Bottle mold		 DUFFIELD, Thomas C.
 Mold  

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