| 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 = '399') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Class is '285'; Subclass is '399';
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 |
| 1870 | ||||||
| U | 100,549 | March 8, 1870 | Improvement in Lightning Rods Lightning rod made of two sheets of metal forming double tubing with flanges and twisted |
MUNSON, David |
Lightning Rod | |
| 1871 | ||||||
| U | 118,166 | August 15, 1871 | Improvement in Lightning Rods Coupling for tubular or solid lightning rods that is screwed together and made solid by a ferrule secured with a pin |
STEPHENSON, George A. SUTLIFF, Oliver L. |
Lightning Rod Coupling | |
| 1873 | ||||||
| U | 145,641 | December 16, 1873 | Improvement in Couplings for Tubular Lightning Rods Means of coupling tubular lightning rods |
FRITSCH, Joseph W. |
Lightning Rod | |
| 1879 | ||||||
| U | 214,545 | April 22, 1879 | Improvement in Lightning Rod Couplings Lightning rod coupling with one tapered end to fit snugly in the other end (see reissue 9,145) |
BACON, Elmore C. |
Lightning Rod Coupling | |
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