| 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 = '315') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '315';
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 |
| 1908 | ||||||
| U | 883,303 | March 31, 1908 | Security Lightning Arrester Lightning rod with multiple separate points arranged along the conductor on the edges of the roof |
DRAKE, William E. |
Lightning Rod Point | |
| 1923 | ||||||
| U | 1,449,694 | March 27, 1923 | Protective Device Protective device to prevent arcing |
PEEK, JR., Frank W. |
Miscellaneous | General Electric Co. |
| 1934 | ||||||
| U | 1,976,378 | October 9, 1934 | Aviation Marker Aviation warning light attached to a suspension insulator |
VROOMAN, Edward C. |
Misc | Locke Insulator Corp. |
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