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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '174') AND (category.subclass = '110R') ORDER BY last_name ASC, first_name, date, patent, type

Total of 3 patents found where: Class is '174'; Subclass is '110R';

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T / S Patent Date Description Patentee Category Assigned To
 MARKLEY, William F.
SLATER, James L.
U Specimen known 3,061,667 October 30, 1962 Telegraph Pole Line Insulator
Rubber pin type insulator (Brown p. 91)		 MARKLEY, William F.
SLATER, James L.
 Rubber Western Union Telegraph Co.
 STEWARD, Demetrius M.
U 271,994 February 6, 1883 Electrical Insulator
Method of treating steatite to make artificial lava insulation		 STEWARD, Demetrius M.
 Lava  
 VARLEY, Cromwell F.
U Specimen known 75,815 March 24, 1868 Improvement in Insulators for Telegraphs
Earthenware insulator, cemented galvanized pin coated with paraffin (Brown p. 57)		 VARLEY, Cromwell F.
 Earthenware  

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