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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 = '429') AND (category.subclass = '185') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '429'; Subclass is '185';

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T / S Patent Date Description Patentee Category Assigned To
 1896
U 572,285 December 1, 1896 Battery Cell
Battery cell		 WILLMS, Charles
 Battery  

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