| 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 = '292') ORDER BY date ASC, patent, type |
Total of 5 patents found where: Class is '403'; Subclass is '292';
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 |
| 1871 | ||||||
| U | 113,869 | April 18, 1871 | Improvement in Lightning Rods Coupling for tubular lightning rods made of a lap or scarf joint |
GAYLORD, Albert A. |
Lightning Rod Coupling | |
| 1874 | ||||||
| U | 152,153 | June 16, 1874 | Improvement in Lightning Rods Lightning rod made of sheet metal rolled to form four tubular sections with two of the tubes fitted with dowell pins to connect the rod sections |
MOTT, John M. |
Lightning Rod | |
| 1875 | ||||||
| U | 170,377 | November 23, 1875 | Improvement in Lightning Rods Coupling for hollow lightning rods composed of a hollow indented plug that fits into indentions in the rod ends |
JOHNSON, Isaac |
Lightning Rod Coupling | |
| 1892 | ||||||
| U | 470,514 | March 8, 1892 | Lightning Conductor Hollow conductor rod with slip fittings |
SIMPSON, Harvey |
Lightning Rod | |
| 1929 | ||||||
U  |
1,716,963 | June 11, 1929 | Insulator Suspension coupling device (see 1,329,770) |
JOHNSTON, Robert M. |
Suspension | Jeffery-Dewitt Co. |
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