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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 = '403') AND (category.subclass = '189') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '403'; Subclass is '189';

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T / S Patent Date Description Patentee Category Assigned To
 1904
U 775,812 November 22, 1904 Insulator Support
Pin design made from sheet metal with partial threads on one side
FAIRBANKS, Ernest Hayward
Pin  

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