| 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 = '300') ORDER BY date ASC, patent, type |
Total of 6 patents found where: Class is '403'; Subclass is '300';
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 |
| 1868 | ||||||
| U | 74,406 | February 11, 1868 | Improvement in Lightning Rods Lightning rod made with twists and folds |
MUNSON, David |
Lightning Rod | |
| 1882 | ||||||
| U | 258,590 | May 30, 1882 | Coupling for Lightning Rods Coupling made in a hollow metal box that can be crimped during installation to fit around the spiralling sides of the lightning rod |
MUNN, William B. |
Lightning Rod Coupling | |
| 1892 | ||||||
| U | 470,514 | March 8, 1892 | Lightning Conductor Hollow conductor rod with slip fittings |
SIMPSON, Harvey |
Lightning Rod | |
| 1914 | ||||||
| U | 1,112,634 | October 6, 1914 | Lightning Conductor Improvement of a previous application (see 1,119,973) by inserting a metallic disc in the coupling to aid in conduction through the coupling |
MAST, Louis L. |
Lightning Rod | Delbert H. Mast |
| 1916 | ||||||
| U | 1,181,399 | May 2, 1916 | Lightning Rod Connecting Clamp Coupling for connecting lightning rods to conductor which clamps around both ends |
MCCULLOUGH, William H. |
Lightning Rod Coupling | J. W. Moorehead, Rayburn Hunter & Co. |
| 1917 | ||||||
| U | 1,228,711 | June 5, 1917 | Connecting Device for Chain-Type Insulators Suspension link coupling |
STEINBERGER, Louis |
Suspension | |
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