| 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 = '424') ORDER BY description ASC, date, patent, type |
Total of 4 patents found where: Class is '285'; Subclass is '424';
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 |
| 1882 | ||||||
| U | 266,075 | October 17, 1882 | Lightning Rod Joint or Coupling Internal coupling for hollow lightning rods that can be pinned to the rod |
BALL, Charles E. |
Lightning Rod Coupling | |
| 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. |
| 1873 | ||||||
| U | 139,841 | June 10, 1873 | Improvement in Coupling Tubular Lightning Rods Means of coupling tubular lightning rods |
WESTON, James H. |
Lightning Rod | |
| U | 145,641 | December 16, 1873 | Improvement in Couplings for Tubular Lightning Rods Means of coupling tubular lightning rods |
FRITSCH, Joseph W. |
Lightning Rod | |
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