| 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 = '403') AND (category.subclass = '285') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '403'; Subclass is '285';
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 |
| 1876 | ||||||
| U | 173,962 | February 22, 1876 | Improvement in Couplings for Tubing and Lightning Rods Coupling made of a short hollow piece placed inside both ends of the rod and crimped down through the rod ends to secure the sections |
JOHNSON, Isaac |
Lightning Rod Coupling | Reyburn, Hunter & Co. |
| 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. |
| 1892 | ||||||
| U | 470,514 | March 8, 1892 | Lightning Conductor Hollow conductor rod with slip fittings |
SIMPSON, Harvey |
Lightning Rod | |
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