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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 = '24') AND (category.subclass = '136R') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '24'; Subclass is '136R';

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T / S Patent Date Description Patentee Category Assigned To
 1874
U 146,996 February 3, 1874 Improvement in Telegraph Insulators
Cylinder split insulator with groove for wire and held by bracket		 EBY, Peter
 Cylinder  
 1903
U 728,442 May 19, 1903 Electric Insulator
Self-tying slot top with wedge keeper plug		 BURKE, Edward J.
 Self-tying Slot Top 1/2 to Cummings & Anderson
 1921
U Specimen known 1,365,411 January 11, 1921 Guy Clamp
A strong and durable guy strain clamp.		 KEARNEY, Samuel G.
 Clamp  

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