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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 = '30') AND (category.subclass = '136') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '30'; Subclass is '136';

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T / S Patent Date Description Patentee Category Assigned To
 1876
U 183,865 October 31, 1876 Improvement in Telegraph Insulators
Slotted glass pin to hold wire and cap screwed to secure wire		 REYNOLDS, David M.
 Slotted James M. Brookfield

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