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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 = 'D7') AND (category.subclass = '591') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is 'D7'; Subclass is '591';

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T / S Patent Date Description Patentee Category Assigned To
U 241,921 May 24, 1881 Means for Attaching Caps to Bottles
Internal groove in the neck of a bottle to secure the cap by means of a chain

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