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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 = '215') AND (category.subclass = '13.1') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '215'; Subclass is '13.1';

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T / S Patent Date Description Patentee Category Assigned To
 1877
U 189,682 April 17, 1877 Improvement in Oil Cans
Glass lined oil can (see reissue 8,600 on 2-25-1879)
BARTELS, William H.
HU 1/2 to George T. Hunsaker

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