| 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 = '285') AND (category.subclass = '392') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '285'; Subclass is '392';
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 |
| 1909 | ||||||
| U | 938,137 | October 26, 1909 | Lightning Rod Lightning rod coupling not made of copper but maintaining a copper contact |
GOETZ, Julius F. |
Lightning Rod Coupling | |
| 1914 | ||||||
| U | 1,119,973 | December 8, 1914 | Lightning Conductor Conductor composed of a strong metal core covered with a sheath of copper to form a ""star"" shaped lightning rod |
MAST, Louis L. |
Lightning Rod | Delbert H. Mast |
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