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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 = '411') AND (category.subclass = '338') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '411'; Subclass is '338';

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T / S Patent Date Description Patentee Category Assigned To
U 607,315 July 12, 1898 Insulator
Wall tube of two split pieces [Scientific American 8-6-1898]
WINGARD, Charles L.
Wall Tube 1/2 to Luella Wingard

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