| 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 = '340') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '403'; Subclass is '340';
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 |
| 1871 | ||||||
| U | 120,251 | October 24, 1871 | Improvement in Lightning Rod Couplings Lightning rods with interconnecting couplings |
DEMOREST, David W. |
Lightning Rod Coupling | |
| 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 | |
| 1883 | ||||||
| U | 278,028 | May 22, 1883 | Lightning Rod Method of connecting flanged or ribbed lightning rods |
LOBDELL, Augustus C. |
Lightning Rod Coupling | |
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