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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 = '16') AND (category.subclass = '2.2') ORDER BY date DESC, patent, type

Total of 5 patents found where: Class is '16'; Subclass is '2.2';

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T / S Patent Date Description Patentee Category Assigned To
U 3,116,362 December 31, 1963 Insulating Bushing Assembly with Spring Retaining Means
Porcelain bushing with a retaining spring.
RANKIN, Lawrence H.
Bushing The Hartford Faience Co.
U 1,171,267 February 8, 1916 Insulator for Electrically Charged Wires
Wall tube with metal gripping strip
SMITH, George R.
Wall Tube  
U 1,056,392 March 18, 1913 Insulator
BARR, Carl A.
KOREN, Jerome H.
U 912,364 February 16, 1909 Insulator for Electrically Charges Wires
Tube for routing wires through wood with spring clip attached to the outside of the tube to prevent the tube from slipping out.
CONRAD, Stonewall Jackson
Wall Tube  
U 830,501 September 11, 1906 Protecting Bushing for Electric Circuit Wires
Bushing with screw threads
Bushing Federal Electric Co.

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