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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 = '191') AND (category.subclass = '41') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '191'; Subclass is '41';

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T / S Patent Date Description Patentee Category Assigned To
U 843,739 February 12, 1907 Electric Insulator
Insulator used on trolley arms to support carrier wire that fits inside a metal case in the support crossarm
FEIGERT, Frederick A.
U 945,972 January 11, 1910 Catenary Suspension for Trolley Wires and the Like
Catenary arrangement using deadend spools
MEAD, George A.
U 1,019,451 March 5, 1912 Sectional Insulator
The GE breakaway insulator, M-2202 or M-2505, is shown in the catenary design
Sectional Insulator General Electric Co.

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