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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 = '70') AND (category.subclass = '456R') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '70'; Subclass is '456R';

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T / S Patent Date Description Patentee Category Assigned To
 1869
U 97,392 November 30, 1869 Improvement in Insulator for Telegraph Wires
Self-tying slot top		 GUSEMAN, W. D.
BRIGHT, E. C.
 Self-tying Slot Top  

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