| 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 = '52') AND (category.subclass = '726.1') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '52'; Subclass is '726.1';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1876 | ||||||
| U | 173,963 | February 22, 1876 | Improvement in Lightning Rods Lightning rod with solid supporting rod fitted inside and screwed into the rod coupling on each end |
JOHNSON, Isaac PRICE, David A. |
Lightning Rod | Reyburn, Hunter & Co. |
| 1912 | ||||||
| U | 1,047,176 | December 17, 1912 | Cross Arm Crossarm stamped out of sheet metal and easy to install |
CRABTREE, Lawrence L. RIPLEY, T. Charley |
Crossarm | |
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