| 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 = '278') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '403'; Subclass is '278';
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 |
| 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 |
| 1915 | ||||||
| U | 1,140,052 | May 18, 1915 | Coupling for Sectional Rods Lightning rod coupling the fits over spiralled rods and crimps tight against the end and screws to other couplings (see 1,558,268) |
MAST, Louis L. |
Lightning Rod Coupling | |
| 1921 | ||||||
| U | 1,398,937 | November 29, 1921 | Suspension Insulator A suspension insulator with pressed on metal cap and special pin that does not require cement. |
CAROLUS, Max |
Suspension | |
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