| 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 = '419') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Class is '411'; Subclass is '419';
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 |
| 1906 | ||||||
| U | 814,613 | March 6, 1906 | Insulator Pin Pin (metal) bracket using split sheet metal threads |
MACKEAN, Frank |
Pin | |
| 1912 | ||||||
| U | 1,013,250 | January 2, 1912 | Insulator Pin Pin for mine insulator comprised of split sheet metal |
WILSON, Walter J. |
Pin | |
| U | 1,022,121 | April 2, 1912 | Insulator Pin Pin, metal with barbs to hold it in hole in crossarm |
BOYLAND, Clarence Joseph |
Pin | |
| 1936 | ||||||
| U | 2,032,017 | February 25, 1936 | Sheet Metal Insulator Support Pin and Method of Making the Same Steel sheet metal pin easily manufactured |
HOCHER, Andrew A. LASHER, Marshall |
Pin | Hubbard and Co. |
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