| 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 = '313') AND (category.subclass = '306') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '313'; Subclass is '306';
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 |
| 1915 | ||||||
| U | 1,166,393 | December 28, 1915 | Insulator Electrose high tension pintype insulator |
STEINBERGER, Louis |
Electrose | |
| 1916 | ||||||
| U | 1,198,137 | September 12, 1916 | Insulator Suspension insulator with an outer covering of spun steel or iron. |
LINCOLN, Paul M. |
Suspension | Westinghouse Electric & Mfg. Co. |
| 1953 | ||||||
| U | 2,644,026 | June 30, 1953 | Radioactive Lightning Protector with Accelerating Elements Lightning rod with porcelain disk coated with radioactive material |
GRENIER, Joseph Pierre LESCIEUX, Pierre Edouard Eugene |
Lightning Rod | Ste. Helita |
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