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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 = '174') AND (category.subclass = '181') ORDER BY date ASC, patent, type

Total of 12 patents found where: Class is '174'; Subclass is '181';

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T / S Patent Date Description Patentee Category Assigned To
 1886
U 352,436 November 9, 1886 Electric Insulator
Strain type		 WINTON, Henry D.
 Strain  
 1894
U 515,779 March 6, 1894 Strain Insulator
Strain type		 LUSCOMB, Henry H.
 Strain The Johns Pratt Co.
 1907
U Specimen known 869,403 October 29, 1907 Strain Insulator
Strain insulator made of a ball with two loop connectors		 ANDERSON, Albert
 Strain Albert & J M Anderson Mfg. Co
 1908
U 904,069 November 17, 1908 Insulator
Strain insulator to electrically disconnect the circuit. (see reissue 13,526)		 KEMPTON, Williard H.
 Strain The Johns-Pratt Co.
 1909
U Specimen known 927,186 July 6, 1909 High Potential Strain Insulator
Electrose strain insulator, specimen marked with this patent		 STEINBERGER, Louis
 Electrose  
 1911
U 1,011,652 December 12, 1911 Strain Insulator
Strain, ribbed made of Electrose		 STEINBERGER, Louis
 Strain  
 1912
U 1,034,518 August 6, 1912 Hanger for Electrical Apparatus
Hanger for street lights composed of a bell insulator, cross arm with spool insulators on each end, and a hook to support the lamp.		 SCHEIBLE, Albert
 Hanger  
U 1,040,971 October 8, 1912 Insulating Joint
miscellaneous - insulating joint		 WIRT, Charles
 Miscellaneous Wirt Electric Specialty
 1913
R 13,526 February 11, 1913 Insulator
Reissue of patent 904,069. Strain insulator to electrically disconnect the circuit.		 KEMPTON, Willard H.
 Strain The Johns-Pratt Co.
 1924
U 1,481,080 January 15, 1924 Insulator
Antenna or guy strain insulator consisting of a bar of porcelain with longitudinal ribs and metal caps on the ends		 AUSTIN, Arthur O.
 Antenna The Ohio Brass Co.
 1931
U 1,822,485 September 8, 1931 Insulator
Method of attached metal cap and pin to suspension insulators		 HAWLEY, Kent A.
 Suspension Locke Insulator Corp.
 1937
U 2,103,399 December 28, 1937 Insulator
Fog type suspension with top curved down over bottom petticoat that extends up inside the top part		 WALKER, Robert H.
 Fog The Ohio Brass Co.

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