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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 = '248') AND (category.subclass = '312.1') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '248'; Subclass is '312.1';

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T / S Patent Date Description Patentee Category Assigned To
U 454,655 June 23, 1891 Suspension Device for Pails
Device to swing a tobacco pail under a store counter
LOCKE, Fred M.
COBB, Frank E.

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