| 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';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1907 | ||||||
| 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. |
Insulator | |
| 1910 | ||||||
| U | 945,972 | January 11, 1910 | Catenary Suspension for Trolley Wires and the Like Catenary arrangement using deadend spools |
MEAD, George A. |
Catenary | |
| 1912 | ||||||
| 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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