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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 = '190') ORDER BY date ASC, patent, type

Total of 9 patents found where: Class is '174'; Subclass is '190';

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T / S Patent Date Description Patentee Category Assigned To
U Specimen known 822,642 June 5, 1906 Wood Strain Insulator
Wood strain insulator with metal caps on the ends
WHITE, Thomas C.
U 829,416 August 28, 1906 Third Rail Insulator
Third rail insulator with 2-part metal cap to secure the rail.
Third Rail 1/2 to Frank J. Guernsey
U 887,996 May 19, 1908 Combined Insulator and Lamp Hanger
Hanger for lamp
BURGE, James M.
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.
U 947,885 February 1, 1910 Insulator
Suspension insulator and clamp support system
CONE, William S.
U 1,236,668 August 14, 1917 Insulator Clamping Device
Clamp for crown of large insulator
BROWN, James M.
Clamp Westinghouse Electric & Mfg. Co.
U 1,333,640 March 16, 1920 Electric Insulator
Suspension with bolted on metal cap (Italy)
U Specimen known 1,574,964 March 2, 1926 Insulation Equipment
Special insulator design for bus bar and equipment support (see 1,274,555 and 1,663,007)
GETTS, Frank E.
Insulator Electrical Engineers Equipment Co.
U 1,602,873 October 12, 1926 Support for Electrical Fixtures
Bus bar support for top of insulator
ANSINGH, Herman K.
Bus Bar Westinghouse Electric & Mfg. Co.

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