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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 = '297') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '297';

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T / S Patent Date Description Patentee Category Assigned To
 1899
U Specimen known 626,065 May 30, 1899 Insulator
Tree hanger		 HOLMES, Welles E.
 Tree  

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