| 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 = '411') AND (category.subclass = '400') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '411'; Subclass is '400';
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 |
| 1890 | ||||||
| U | 419,642 | January 21, 1890 | Insulator for Electric Wires Split ring with split ring holder and lag screw |
CORNOG, Isaac P. |
Split | |
| U | 441,849 | December 2, 1890 | Electric Line Hook Hook made of iron to secure line wire with threaded end to screw in crossarm |
LOCKE, Fred M. LAPP, John |
Hook | 1/3 to Theodore Norton |
| 1916 | ||||||
| U | 1,201,295 | October 17, 1916 | Insulator Support Pin, cast metal with lag screw |
HENDEE, Lem E. |
Pin | |
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