|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
|GILLETTE, John C.
||Sectional Insulator||General Electric Co.|
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