| 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 = '285') AND (category.subclass = '390') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '285'; Subclass is '390';
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 | 173,905 | February 22, 1876 | Improvement in Lightning Rods Lightning rod made of sealed tubular metal with indentions running around the outside as the threads of a screw adding strength and allowing easy joining of sections |
COE, Henry L. |
Lightning Rod | The Manhattan Brass Co. |
| 1877 | ||||||
| U | 192,718 | July 3, 1877 | Improvement in Couplings for Lightning Rods Coupling for tubular lightning rods with male and female parts allowing the ends to be screwed together |
SMITH, Charles H. |
Lightning Rod Coupling | |
| 1884 | ||||||
| U | 303,488 | August 12, 1884 | Coupling for Tubular Lightning Rods Coupling for tubular lightning rods |
BRADLEY, Sylvester |
Lightning Rod Coupling | |
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