| 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 = '923') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '411'; Subclass is '923';
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 |
| 1896 | ||||||
| U | 573,101 | December 15, 1896 | Wall Insulator Slack wire ring driven into mortar between bricks |
O'NEILL, James J. |
Slack Wire | |
| 1901 | ||||||
| U | 679,308 | July 30, 1901 | Insulator Slack wire knob, bracket and suspension clip |
GEISENHONER, Henry |
Slack Wire | General Electric Co. |
| 1908 | ||||||
| U | 880,121 | February 25, 1908 | Electrical Insulator Knob wiring insulator composed of two or more discs to secure individual wires from each other and the supporting nail or screw. |
BOLTON, Daniel G. |
Knob | |
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